ACT Science Homework Science 2, Set 1 35 Minutes 38 Questions
|
|
- Brent Francis
- 5 years ago
- Views:
Transcription
1 ACT Science Homework Science 2, Set 1 35 Minutes 38 Questions Passage I DIRECTIONS: There are seven passages in this test. Each passage is followed by several questions. After reading a passage, choose the best answer to each question and fill in the corresponding oval on your answer document. You may refer to the passages as often as necessary. You are NOT permitted to use a calculator on this test. Reaction rates measure how quickly a chemical reaction takes place. There are many factors that can affect reaction rate: the concentration of the reactants, the temperature of a reaction, and the physical size of the reactants are some examples. Experiment 1 A 5 g piece of calcium carbonate was placed in test tubes with different concentrations (measured in moles or M) of hydrochloric acid. The time it took the acid to dissolve the calcium carbonate was recorded. Concentration of acid Time to dissolve 1 M 93 sec 3 M 58 sec 5 M 32 sec Experiment 2 3 different volumes of 5 grams of calcium carbonate were placed in test tubes with 3 M hydrochloric acid. The time it took the acid to dissolve the calcium carbonate was recorded. Volume of calcium carbonate Time to dissolve 5 cm 3 56 sec 10 cm 3 28 sec 15 cm 3 13 sec Experiment 3 The amount of 3 M hydrochloric acid was varied when mixed with 5 g of calcium carbonate with a volume of 10 ml. The time it took for the calcium carbonate to dissolve was recorded. Volume of hydrochloric acid Time to dissolve 3 ml 42 sec 5 ml 39 sec 7 ml 13 sec 1
2 1. Which of the following reaction rates was not tested? A. Temperature of the reaction B. Volume of hydrochloric acid C. Concentration of hydrochloric acid D. Volume of calcium carbonate 4. In Experiment 2, what was actually being varied? F. The amount of calcium carbonate being added G. The amount of hydrochloric acid being added H. The concentration of hydrochloric acid being added J. The volume of calcium carbonate being added 2. In Experiment 2, the volume of the calcium carbonate was studied. Which of the following volumes would have the fastest reaction time? F. 15 cm 3 G. 18 cm 3 H. 17 cm 3 J. 16 cm 3 5. Experiment 1 measures reaction time by testing which variable? A. The time it took the calcium carbonate to dissolve B. The amount of calcium carbonate used C. The concentration of hydrochloric acid D. The amount of hydrochloric acid 3. In Experiment 3, as the amount of acid was increased, the reaction rate: A. Sped up B. Slowed down C. Sped up and then slowed down D. Slowed down and then sped up 6. What set of circumstances will most optimize reaction time? F. Large volume of strong hydrochloric acid with a large volume of calcium chloride G. Small volume of strong hydrochloric acid with a large volume of calcium chloride H. Large volume of weak hydrochloric acid with a large volume of calcium chloride J. Small volume of weak hydrochloric acid with a large volume of calcium chloride 2
3 Passage II Simple machines do a lot to improve how much effort needs to be put into a job in order for it to be done. The amount of effort these machines save is called the mechanical advantage. It is calculated as the factor by which it multiplies an applied force. The mechanical advantage is listed for each experiment. The higher the mechanical advantage, the easier the job becomes. Experiment 1 A 20 kg object needed to be rolled up an inclined plane. Several different planes were available. Length Height Mechanical advantage Plane 1 15m 5m 3 Plane 2 30m 5m 6 Plane 3 45m 5m 9 Plane 4 10m 5m 2 Experiment 2 This same object is lifted up the distance it needs to go by a set of levers. Effort arm length Resistance arm length Mechanical advantage First class lever 10m 2m 5 Second class lever 15m 10m 3 Third class lever 2m 10m.2 3
4 Experiment 3 This same 20 kg object can be lifted the 5m with a pulley. moveable puley fixed pulley Fixed or moveable Effort distance Resistance distance Mechanical advantage Pulley 1 Fixed 5m 5m 1 Pulley 2 Fixed 7m 7m 1 Pulley 3 Moveable 10m 5m 2 Pulley 4 Moveable 15m 5m 3 source material 4
5 7. Which simple machine made the job the easiest? A. Third class lever B. Inclined plane 3 C. Inclined plane 2 D. Pulley Why are long inclined planes seldom built as ramps? F. Though they have increased mechanical advantage, they are too long and the slope too gradual to be practical. G. Though they have increased mechanical advantage, they are too steep to be practical. H. With a small mechanical advantage, they are a waste of space. J. Further study should be done to determine their usefulness. 8. What is the relationship between effort arm and resistance arm in a third class lever? F. The fulcrum is between the resistance arm and the effort arm. G. The resistance arm is between the fulcrum and the effort arm. H. The effort arm is between the resistance and the fulcrum. J. It is impossible to determine the relationship. 11. Why does a third class lever have a smaller mechanical advantage? A. The resistance force does not move as far as the effort force, making the change in distance not direction. B. The fulcrum makes it more balanced. C. The resistance force and effort force are balanced, and so there is no mechanical advantage. D. The effort force does not move as far as the resistance. 9. Why does the fixed pulley only have a mechanical advantage of one? A. The effort distance is always greater than the resistance distance. B. The effort distance and the resistance distance always have to be the same. C. The resistance distance is always less than the effort distance. D. The effort distance and the resistance distance are always changing. 12. If a large, heavy object needed to be moved to a higher platform, which pulley would be the most effective? F. A fixed pulley because it will allow the force of the heavy object to be in the same direction as it is being pulled. G.A fixed pulley because it will allow the direction of the force to be changed, so someone can pull in the opposite direction of the heavy object. H. A moveable pulley because it will allow the person pulling the object to pull in the same direction as the object is being moved. J. A moveable pulley because its mechanical advantage is higher. 5
6 Passage III Enzymes catalyze reactions; they make them work. Some factors speed or slow the enzyme. Several factors were studied. Each study was allowed to react until the reaction stopped. Reaction percent was calculated using the theoretical yield compared to the actual. The amount of the reactants was the same for each study. Experiment 1 The temperature at which the reaction took place was studied. The percentage is the percent maximum activity. Temperature in Celsius Percent activity Effect of Temperature 100 Percent Activity Temperature in Celcius Percent activity Experiment 2 The ph of the solution that holds the same enzyme and the reaction also affects the rate at which the enzyme works. The lower the ph, the more acidic the solution. ph Percent activity
7 Effect of ph 100 Percent activity ph Series1 Experiment 3 The concentration of the enzyme was studied. The concentration is measured in moles. Enzyme concentration Percent activity (in moles) source material 7
8 13. At which point does the temperature have a negative affect on the reaction rate? A. 35 B. 45 C. 55 D Based on the data in Experiment 2, if the enzyme activity had been measured when the ph of the solution was 4.5, it most likely would have been: F. 110 G. 98 H. 70 J Another enzyme behaves similarly to the enzyme studied. However, this enzyme is activated at a higher temperature and a more acidic environment. If the model environment is to be designed for it, it would be F. Temperature=40, ph=3.5, enzyme concentration=1.5 G. Temperature= 50, ph=4, enzyme concentration=1.75 H. Temperature=40, ph=4, enzyme concentration= 1.5 J. Temperature=50, ph=3.5, enzyme concentration= According to the results of the experiment, as the temperature of the reaction increases, the enzyme activity A. Increases. B. Decreases. C. Increases to a point and then decreases. D. Decreases to a point and then increases. 15. The best possible conditions for this enzyme s work is A. Temperature=40, ph=4, enzyme concentration= 1.5 B. Temperature= 50, ph=4, enzyme concentration=1.75 C. Temperature=50, ph=3.5, enzyme concentration=1.5 D. Temperature=40, ph=3.5, enzyme concentration= As the amount of enzyme increases, the enzyme activity F. Increases to a point then decreases. G. Decreases. H. Decreases to a point then increases. J. Increases. 8
9 Passage IV Soil Types: Soil can be classified based on the size of particles and the overall composition. Three main classifications for soil include: sand (largest particles, rough texture, limited nutrients), silt (middle-sized particles, smooth and powdery texture when dry) and clay (smallest particles, smooth texture when dry but sticky when wet, nutrient rich). A combination of all three soils is often called loam. Scientists wanted to study a variety of properties of some of these soils and other soil types in order to determine the best soil for plants in their area. Experiment 1 Filtration Scientists dried and crushed each soil sample before placing it in a funnel lined with filter paper. They then placed the funnel over a beaker and poured 100ml of a dark blue dye through each sample. The resulting color of the dye was observed and recorded. The lighter the color, the more the soil filtered the water. Table 1 Soil Type Loam Sand Clay Final Color Medium Blue Dark Blue Light Blue Experiment 2 Wind Erosion Scientists took the same three types of soil from Experiment 1 and tested their resistance to wind erosion. The samples were dried and then placed on a table two meters from a fan. The fan was turned on, and the time to remove all of the soil was recorded. The longer it took to remove all of the soil, the more resistant the soil was to wind erosion. Wind Erosion Time (seconds) Loam Silt Clay 9
10 Experiment 3 ph The ph was tested and recorded using a ph meter for all five soil samples. The ph scale ranges from 0 to 14 (7 is neutral). The higher the ph, the more basic a substance; the lower the ph, the more acidic a substance. Table 2 Soil Type Loam Clay Sand Silt Peat ph Which of the following diagrams best illustrates the set up of Experiment 1? C. A. D. 20. Broccoli and cauliflower both grow best in soils with a ph between 6.0 and 6.5. When planting these vegetables in a slightly windy area, which soil is best? F. Silt G. Clay H. Sand J. Loam B. 10
11 21. According to Experiment 1, which of the following lists the soils in order from most effective filtration to least effective filtration? A. Loam, Sand, Clay B. Clay, Loam, Sand C. Clay, Sand, Loam D. Loam, Clay, Sand 22. Researchers would like to test another type of soil - peat - in order to assess wind erosion resistance. Knowing that peat is a dense conglomerate of partially decayed vegetative material, how long would you expect it to take for the sample to be completely removed? F seconds G. 2.0 seconds H. 7.0seconds J. 7.5 seconds 23. If soil samples were wet, the time required for complete wind erosion would likely do which of the following? A. Remain the same, because water will not affect the soil s resistance to wind. B. Increase, for sand but stay the same for loam and clay because water only makes sand weigh more. C. Increase, because the samples would be weighted down by the water and therefore harder to move. D. Decrease, because water will make the samples more susceptible to wind erosion. 25. Which best represents the data from Experiment 3? A. B. C. 24. Not all soil can be classified as a pure sample of one of the main types listed. What would you expect the order (from lightest to darkest color) to be if Experiment 1 were repeated using the following combinations: F. Loam/sand, clay/sand, clay/loam G. Clay/loam, loam/sand, clay/loam H. Clay/loam, clay/sand, loam/sand J. Loam/sand, clay/loam, clay/sand D. 11
12 Passage V source material Electrical current running through a circuit can be controlled in many ways. An amp is a measurement of how much current is moving through a circuit while a volt is a measure of how fast the current is moving. Some materials resist the flow of current; they are called resistors. The strength of a resistor is measured in Ohms, a ratio of the number of volts per amp. Study 1 In a closed circuit, the number of volts was varied. The amount of amps and ohms are listed in the table below. Volts Amps Ohms Study 2 In a closed circuit, the number of amps was varied. The amount of volts and ohms are listed in the table below. Volts Amps Ohms Study 3 This time, the ohms were varied. The amount of volts and amps are listed in the table below. Volts Amps Ohms
13 26. In a closed system, what is the relationship between volts and amps? F. When the amount of volts goes up, the number of amps stays the same. G. When the amount of amps goes up, the number of volts stays the same. H. When the number of volts goes up, the number of amps goes up. J. When the number of volts goes up, the number of amps goes down. 30. Would the amount of current have to be increased if the resistor was made stronger? F. Yes, there would have to be an increase in current to accommodate the increased resistance. G. No, the amount of current only changes with a change in amps. H. No, the amount of current in a closed circuit stays the same; the number of amps would decrease. J. No, the amount of current in a closed circuit stays the same; the number of amps would increase. 27. When ohms are varied what happens to the amps? A. As ohms decrease, amps decrease. B. As ohms decrease, amps stay the same. C. As ohms increase, amps increase. D. As ohms increase, amps decrease. 31. What is the difference between Study 2 and Study 3? A. In Study 2, the amps were varied while in Study 3 the ohms were varied. B. In Study 2, the ohms were varied while in Study 3 the ohms were varied. C. In Study 2, the volts were varied while in Study 3 the amps were varied. D. In Study 2, the amps were varied while in Study 3 the volts were varied. 28. What would cause the number of ohms to increase in a closed circuit? F. Volts increasing and amps increasing. G. Volts decreasing and amps increasing. H. Volts increasing and amps staying the same. J. Volts decreasing and amps staying the same. 32. Which of the following conclusions would be consistent with the relationship between volts, amps and ohms? F. Volts are a ratio of amps to ohms. G. Ohms are a ratio of volts to amps. H. Amps are a ratio of ohms to volts. J. They have no relationship. 29. What is the ratio of volts to amps in Study 1? A. 500 B C. 50 D. 5 13
14 Passage VI Scientists were determining the set of safety standards an oil refinery should use as they refine oil with a sulfuric acid. The mixture of the hydrocarbons of the oil and the acid can be stored in many different ways as it waits for the next step of the refinery process. The best storage standards keep any accidental release of acid and hydrocarbons from being added to the environment around the plant. Experiment 1 The scientists looked first at the pressure and temperature of the mixture in storage. Pressure is measured in psi (pounds per square inch) and the temperature is measure in degrees Fahrenheit. Trial Number Storage Tank Pressure Storage Tank Temperature Percent Recovery Rate Experiment 2 The scientists also wanted to determine if the shape and the size of the fittings for the hoses that connect from the refinery to the storage tank were affecting the amount of acid that was recovered. This experiment was conducted at 40 degrees Fahrenheit and at 85 psi. Trial Number Shape of Fitting Size of Fitting Percent Recovery Rate 5 Flange 1.5 mm 75 6 Flange.1 mm 72 7 Circular 1.5 mm 89 8 Circular.1 mm 80 Experiment 3 The scientists theorized that the amount of acid mixed with the hydrocarbons might also affect the recovery rate, since the hydrocarbon forms a small bubble around the acid, allowing it to carry farther away from the recovery field. Trial Number Ratio of Hydrocarbon to Acid in Percent Percent Recovery Rate 9 30: : : :
15 33. As scientists increased the pressure of the storage tank, the recovery rate A. increased dramatically B. decreased somewhat C. increased somewhat D. decreased dramatically 34. The most effective settings for the storage tank are F. 85 psi and 40 degrees G. 85 psi and 70 degrees H. 55 psi and 40 degrees J. 55 psi and 70 degrees 36. If scientists want to increase the acid recovery rate, they should change the storage tank by: F. Lowering the pressure at which the acid is stored and lowering the temperature. G. Lowering the pressure at which the acid is stored and raising the temperature. H. Raising the pressure at which the acid is stored and raising the temperature. J. Raising the pressure at which the acid is stored and lowering the temperature. 37. The ratio of hydrocarbons to acid that has the least detrimental effect on recovery rate is: A. 60:40 B. 40:60 C. 50:50 D. 30: Fittings influenced the recovery rate. Which fitting can we assume would create the best possible recovery rate? A. 2 mm circular B. 2 mm flange C..2 mm circular D..2 mm flange 38. Why does the percent ratio of hydrocarbons to acid matter? F. There has to be extra acid to break down the hydrocarbons and form the small bubbles. G. The less acid allows the hydrocarbons to be broken down faster. H. There has to be just enough acid to break down the hydrocarbon without forming small bubbles. J. The more acid allows the hydrocarbons to be broken down faster. 15
Rocks and Weathering
Rocks and Weathering The Effects of Weathering The process of mountain building thrusts rock up to Earth s surface. Weathering is the process that breaks down rock and other substances at Earth s surface.
More informationMechanical Weathering
Mechanical Weathering Objectives Students will be able to: Explain how weathering breaks down rock. Explain how a rock s surface area affects the rate of weathering. The Great Sphinx Of all the amazing
More informationPhysical Science EOCT Practice Part II. Milton High School
Physical Science EOCT Practice Part II Milton High School Potassium is an element in group 1 and period 4. How many valence electrons does an atom of potassium contain? A. 1 B. 2 C. 3 D. 4 Potassium is
More informationSection 1: Work and Power. Section 2: Using Machines. Section 3: Simple Machines
Table of Contents Chapter: Work and Simple Machines Section 1: Work and Power Section 2: Using Machines Section 3: Simple Machines 1 Work and Power What is work? Work is done when a force causes an object
More informationBiosphere. All living things, plants, animals, (even you!) are part of the zone of the earth called the biosphere.
Unit 1 Study Guide Earth s Spheres Biosphere All living things, plants, animals, (even you!) are part of the zone of the earth called the biosphere. Hydrosphere Water covers ¾ of the earth, made up mostly
More informationChemistry 1B Experiment 14 65
Chemistry 1B Experiment 14 65 14 Electrochemistry Introduction In this experiment you will observe some spontaneous and non-spontaneous oxidation-reduction reactions, and see how the spontaneous reactions
More informationHow Do Objects Move? Describing Motion. Different Kinds of Motion
How Do Objects Move? Describing Motion Different Kinds of Motion Motion is everywhere. The planets are in motion around the Sun. Cars are in motion as they are driven down the street. There s even motion
More informationGeology Chapter Teacher Sheet. Activity #3: Determining the Percolation Rate of Soil
Geology Chapter Teacher Sheet Activity #3: Determining the Percolation Rate of Soil Adapted from The Percolation Rate of a Soil, CurriculumResources for Earth Science Teachers, Maine Department of Conservation.
More informationLesson 1: How can you describe motion?
Lesson 1 Summary Use with pp. 407 409 Lesson 1: How can you describe motion? Vocabulary velocity the speed and direction of an object s motion Types of Motion Motion is movement. When you see something
More information5 Which of the following is a compound? 6 Erik poured a cup of water onto a pile of dirt, 7 The picture shows the mass, in grams (g), of a
1 The equation below illustrates a chemical process that involves the elements carbon and oxygen. C + O 2 CO 2 What does this model of a chemical equation illustrate? A. the structure of an atom B. the
More informationEXPERIMENT: LIMITING REAGENT. NOTE: Students should have moles of reactants in DATASHEET converted into masses in grams prior to the lab period.
Revised 12/2015 EXPERIMENT: LIMITING REAGENT Chem 1104 Lab NOTE: Students should have moles of reactants in DATASHEET converted into masses in grams prior to the lab period. INTRODUCTION Limiting reactant
More informationStudying Rocks and Soil
Studying Rocks and Soil How do rocks form? Rocks Rock is found in nature. Rock is solid. It is nonliving matter. All rocks are made of one or more minerals. A mineral is a natural material that forms from
More informationName: Date: AP Chemistry. Titrations - Volumetric Analysis. Steps for Solving Titration Problems
Name: Date: AP Chemistry Titrations - Volumetric Analysis Term Volumetric analysis Burette Pipette titrate titre aliquot end point equivalence point indicator primary standard standardisation secondary
More informationIGCSE(A*-G) Edexcel - Chemistry
IGCSE(A*-G) Edexcel - Chemistry Principles of Chemistry Atoms NOTES 1.8 Describe and explain experiments to investigate the small size of particles and their movement including: Dilution of coloured solutions
More informationTo understand concept of limiting reagents. To learn how to do a vacuum filtration. To understand the concept of recrystallization.
E x p e r i m e n t Synthesis of Aspirin Experiment : http://genchemlab.wordpress.com/-aspirin/ objectives To synthesize aspirin. To understand concept of limiting reagents. To determine percent yield.
More informationEXPERIMENT A4: PRECIPITATION REACTION AND THE LIMITING REAGENT. Learning Outcomes. Introduction
1 EXPERIMENT A4: PRECIPITATION REACTION AND THE LIMITING REAGENT Learning Outcomes Upon completion of this lab, the student will be able to: 1) Demonstrate the formation of a precipitate in a chemical
More informationSupernatant: The liquid layer lying above the solid layer after a precipitation reaction occurs.
Limiting Reagent Introduction The quantities of substances involved in a chemical reaction represented by a balanced equation are often referred to as stoichiometric amounts. Solution stoichiometry is
More information2/22/2019 NEW UNIT! Chemical Interactions. Atomic Basics #19
NEW UNIT! Chemical Interactions Atomic Basics #19 1 Vocabulary: Matter: Anything that has mass and takes up space. Atom: the smallest particle of matter. Element: A pure substance made up of only one type
More informationMechanical Weathering
Weathering is the disintegration and decomposition of material at or near the surface. Erosion is the incorporation and transportation of material by a mobile agent, usually water, wind, or ice. Geologists
More information4 Conservation of Energy
CHAPTER 13 4 Conservation of Energy SECTION Work and Energy KEY IDEAS As you read this section, keep these questions in mind: How can energy change from one form to another? What is the law of conservation
More informationConcrete setting. This reaction is quite slow. It will take a couple of days for the concrete to fully harden.
10.1 Rates of reaction Fast and slow Some reactions are fast and some are slow. Look at these examples: The precipitation of silver chloride, when you mix solutions of silver nitrate and sodium chloride.
More informationMonday, October 15 th Grab a textbook! Objective: We will explain the formation of different soils and classify soils according to particle size.
Soil Mr. Gilmore Monday, October 15 th Grab a textbook! Objective: We will explain the formation of different soils and classify soils according to particle size. Review: 1. The four limestone samples
More informationEXPERIMENT #4 Separation of a Three-Component Mixture
OBJECTIVES: EXPERIMENT #4 Separation of a Three-Component Mixture Define chemical and physical properties, mixture, solubility, filtration, sublimation, and percent Separate a mixture of sodium chloride
More informationEarth systems the big idea guiding questions Chapter 1 & 2 Earth and Earth Systems review notes are in purple
Earth systems the big idea guiding questions Chapter 1 & 2 Earth and Earth Systems review notes are in purple How can you describe Earth? What are the composition and the structure of the atmosphere? How
More informationCHAPTER 4 TEST REVIEW
CHAPTER 4 TEST REVIEW Work = Force x Distance 1. Work is measured in. a. Newtons b. Joules c. Centimeters d. Grams 2. Sir Isaac Newton is famous for discovering the. a. Laws of motion b. Laws of work c.
More informationWorking in the Chemistry Laboratory
Working in the Chemistry Laboratory Accelerated Chemistry I Introduction: One of the most important components of your chemistry course is the laboratory experience. Perhaps you have done experiments in
More informationErosion. changing landforms. Purpose. Process Skills. Background. Time 1 1 ½ hours Grouping Pairs, small groups, or class.
Purpose To demonstrate how several factors affect the rate of erosion. Process Skills Observe, Measure, Collect data, Interpret data, Form a hypothesis, Make a model, Identify and control variables, Draw
More informationSoil Toil. Student McStudent Mrs. Teacher November 26, 2017 Grade 6
Soil Toil Student McStudent Mrs. Teacher November 26, 2017 Grade 6 Table of Contents Abstract Page 1 Question Page 2 Variables Page 2 Hypothesis Page 2 Background Research Pages 4-5 Materials Page 5 Experimental
More informationTEACHER BACKGROUND KNOWLEDGE. Surface Processes: Weathering and Erosion
TEACHER BACKGROUND KNOWLEDGE Surface Processes: Weathering and Erosion Core Concepts Precipitation (caused by the water cycle) and wind cause rocks to be broken into smaller pieces in the process called
More informationΣE before ± W = ΣE after
The Law of Conservation of Energy The Law of Conservation of Energy states: Energy is never created nor destroyed just transformed into other forms of energy. OR ΣE before = ΣE after Yet if energy is added
More informationSupernatant: The liquid layer lying above the solid layer after a precipitation reaction occurs.
Limiting Reagent Introduction The quantities of substances involved in a chemical reaction represented by a balanced equation are often referred to as stoichiometric amounts. Solution stoichiometry is
More informationRecovery of Copper Renee Y. Becker Manatee Community College
Recovery of Copper Renee Y. Becker Manatee Community College Introduction In this lab we are going to start with a sample of copper wire. We will then use a sequence of reactions to chemically transform
More informationCOEFFICIENTS. - Experimentally, we can usually determine the reactants and products of a reaction
81 COEFFICIENTS - Experimentally, we can usually determine the reactants and products of a reaction - We can determine the proper ratios of reactants and products WITHOUT further experiments, using a process
More informationWeathering is the process by which rocks on or near Earth s surface break down and change. Spherical weathering near Paris, NC
Weathering Weathering is the process by which rocks on or near Earth s surface break down and change. Spherical weathering near Paris, NC The two types of weathering are Chemical and. Mechanical Mechanical
More informationWeathering is the process that breaks down rock and other substances at Earth s surface
Chapter 8 Notes Weathering is the process that breaks down rock and other substances at Earth s surface Factors that contribute to weathering Heat Cold Water Ice O 2 & CO 2 in the atmosphere Examples of
More informationACTIVITY 5: Changing Force-Strength and Mass
UNIT FM Developing Ideas ACTIVITY 5: Changing Force-Strength and Mass Purpose In the previous activities of this unit you have seen that during a contact push/pull interaction, when a single force acts
More informationGeneral Chemistry I CHEM-1030 Laboratory Experiment No. 2 Physical Separation Techniques
General Chemistry I CHEM-1030 Laboratory Experiment No. 2 Physical Separation Techniques Introduction When two or more substances that do not react chemically are blended together, the components of the
More informationHowever, what kind of correlation actually exists between the temperature of a solution and the
Ding 1 Chunyang Ding Mr. Rierson AP/IB Chemistry SL 16 December 2012 Through most chemical experiments, the variable that is most associated with being controlled is temperature. This makes sense in many
More informationWeathering, Erosion and Deposition
Weathering, Erosion and Deposition Shaping the Earth s Surface Weathering the process of breaking down rocks into smaller fragments Erosion the transport of rock fragments from one location to another
More informationGo on to the next page.
Chapter 10: The Nature of Force Force a push or a pull Force is a vector (it has direction) just like velocity and acceleration Newton the SI unit for force = kg m/s 2 Net force the combination of all
More informationExperiment 14 - Heats of Reactions
Experiment 14 - Heats of Reactions If a chemical reaction is carried out inside a calorimeter, the heat evolved or absorbed by the reaction can be determined. A calorimeter is an insulated container, and
More informationName: Grade 6 Date: REVISION BOOKLET
REVISION BOOKLET science 1 Chapter # 16 MACHINES QA: Read each question and choose the best answer. Then fill in the circle next to the correct answer. 1. Dan and Paul push a box 4 meters with a force
More informationWeathering & Erosion
Name Test Date Hour Earth Processes#1 - Notebook Weathering & Erosion LEARNING TARGETS I can explain the process of weathering. I can explain why weathering is important. I can describe the difference
More informationWhat is Science? Science is both a collection of knowledge and the process for building that knowledge.
Introduction to Science Junior Science What is Science? Science is both a collection of knowledge and the process for building that knowledge. Science asks questions about the natural world and looks for
More informationFission and Chain Reactions
The Harnessed Atom Lesson Five Fission and Chain Reactions What you need to know about Fission and Chain Reactions: Fission Chain reaction Uranium fuel Mining Milling Enrichment Fuel fabrication 2 Nuclear
More informationName Class Date. How do mixtures differ from elements and compounds? How can mixtures be separated? What are solutions?
CHAPTER 4 3 Mixtures SECTION Elements, Compounds, and Mixtures BEFORE YOU READ After you read this section, you should be able to answer these questions: How do mixtures differ from elements and compounds?
More informationUnit E: Basic Principles of Soil Science. Lesson 2: Understanding Soil Formation
Unit E: Basic Principles of Soil Science Lesson 2: Understanding Soil Formation Important Terms Alluvium Bedrock Chemical weathering Climate Glacial till Loess Native vegetation Organic matter Outwash
More informationLisa Barton CHEM 2312 Organic Chemistry Performed: 2/4/12. Synthesis of Aspirin
Lisa Barton CHEM 2312 rganic Chemistry Performed: 2/4/12 Synthesis of Aspirin bjective: The goal of this experiment is to synthesize Aspirin (Acetylsalicylic Acid) from the reaction of Salicylic acid and
More informationChapter: Weathering and Erosion
Chapter: Weathering and Erosion Section 1: Weathering and Soil Formation Minerals form rocks Rocks form soil Weathering Weathering is a mechanical or chemical surface process that breaks rocks into smaller
More informationPhysical Science Review Sheet Matter & Physical Properties
Name: Date: 1. The four diagrams below model the results of mixing atoms of different substances. Each atom is represented by a different symbol. Which diagram correctly models a chemical change? 4. Base
More informationWork, Power and Machines
CHAPTER 13.1 & 13.2 Work, Power and Machines Section one: Work, Power, and Machines Objective one: Calculate Work Objective Two: Differentiate Work and Power Objective Three: Discover that machines make
More informationCHAPTER 5. Work, Power and Machines
CHAPTER 5 Work, Power and Machines Section one: Work, Power, and Machines Objective one: Calculate Work Objective Two: Differentiate Work and Power Objective Three: Discover that machines make work easier
More informationEXTRA CREDIT PAGES K
Mixtures (13K) EXTRA CREDIT PAGES 13-14 K Elements and compounds are pure substances, but most of the materials you see every day are not. Instead, they are mixtures. A mixture is made of two or more substances
More informationForce and Motion Test 2 Review
Force and Motion Test 2 Review Name: S8P5a. Investigate and explain that electric currents and magnets can exert force on each other. 1. What happens to a compass needle when it is placed next to a wire
More informationc) metamorphosis d) rock transformation a) melting and cooling b) heat and pressure a) igneous rock b) sedimentary rock
Quizizz Rocks and Soil Name : Class : Date : 1. The process where rocks is transformed from one type to another is called a) rock cycle b) water cycle c) metamorphosis d) rock transformation 2. How are
More informationLimiting Reagent. Introduction
Limiting Reagent Introduction The concept of the limiting reagent can be demonstrated by an analogy: Jerry works in the Purchasing Department at a specialty car manufacturing plant in Detroit. The plant
More informationThe student will learn about the main purposes and the basic components of all machines. SIMPLE MACHINES. SPH4C Findlay
The student will learn about the main purposes and the basic components of all machines. SIMPLE MACHINES SPH4C Findlay What do you think of when you hear the word machine? Simple Machines Machines created
More information+ H 2 O Equation 1. + NaOH CO 2 Na
Experiment # 5 VINEGAR: AN FDA INVESTIGATION Objective In this experiment, you will play the role of an FDA analytical chemist, You will verify whether a vinegar manufacturer's quality control lab remains
More informationWork, Power and Simple Machines. Chapter 4 Physical Science
Work, Power and Simple Machines Chapter 4 Physical Science Work, Power and Simple Machines Machines make jobs easier by increasing the applied force on an object. The trade-off is that this also requires
More informationSoil Formation. Lesson Plan: NRES B2-4
Soil Formation Lesson Plan: NRES B2-4 1 Anticipated Problems 1. What are five different factors that affect soil formation? 2. What are some different types of parent material that affect soils? 3. What
More information2 Rates of Weathering
Name CHAPTER 10 Class Date Weathering and Soil Formation SECTION 2 Rates of Weathering National Science Education Standards BEFORE YOU READ After you read this section, you should be able to answer these
More informationSemester One Test Review
Semester One Test Review Net Forces a. 5N 2N b. 5N 3N c. 3N 3N d. 2N 4N 2N 1. Which forces diagrams above show a Net Force of zero? a. All of them b. None of them c. c only d. c and d 2. Which force diagrams
More informationPartner: Judy 29 March Analysis of a Commercial Bleach
Partner: Judy 29 March 2012 Analysis of a Commercial Bleach Purpose: The purpose of this lab is to determine the amount of sodium hypochlorite (NaClO) in commercial bleach. This can be done by forming
More informationPratice Surface Processes Test
1. The cross section below shows the movement of wind-driven sand particles that strike a partly exposed basalt cobble located at the surface of a windy desert. Which cross section best represents the
More informationPonce de Leon Middle School Physical Science 2017 Summer Instructional Packet
Ponce de Leon Middle School Physical Science 2017 Summer Instructional Packet DIRECTIONS: 1. You are required to complete the Summer Instructional Packet. 2. Turn in your completed package to your teacher,
More information7.P Simple Machines Study Guide Multiple Choice: Identify the letter of the choice that best completes the statement or answers the question.
7.P.2.4 - Simple Machines Study Guide Multiple Choice: Identify the letter of the choice that best completes the statement or answers the question. 1. For work to be done on an object, a. some force need
More informationl Every object in a state of uniform motion tends to remain in that state of motion unless an
Motion and Machine Unit Notes DO NOT LOSE! Name: Energy Ability to do work To cause something to change move or directions Energy cannot be created or destroyed, but transferred from one form to another.
More informationCh. 7 Foundations of Chemistry
Ch. 7 Foundations of Chemistry Classifying Matter Matter is anything that has mass and takes up space. Atom - smallest particle of matter 2 Main Classifications of Matter Substance Mixtures Substances
More informationMetal + water -> metal hydroxide + hydrogen Metal + acid -> metal salt + hydrogen
Name of Formula Formula of ion Name of salt Hydrochloric Sulphuric HCl Cl - Chloride H 2 SO 4 SO 4-2 Sulphate Key words: Oxidation: loss of electrons Reduction: gain of electrons Displacement reaction:
More informationNotes for: How Can You Describe Matter, Mixtures, and Solutions? A. Matter is anything that has mass and takes up space
Notes for: How Can You Describe Matter, Mixtures, and Solutions? I. Properties of Matter A. Matter is anything that has mass and takes up space 1. scientists describe and compare matter based on properties,
More informationChemistry 151 Last Updated Dec Lab 8: Precipitation Reactions and Limiting Reagents
Chemistry 151 Last Updated Dec. 2013 Lab 8: Precipitation Reactions and Limiting Reagents Introduction In this lab you will perform a simple precipitation reaction between strontium nitrate and potassium
More informationLecture Outline. Chapter 7: Energy Pearson Education, Inc.
Lecture Outline Chapter 7: Energy This lecture will help you understand: Energy Work Power Mechanical Energy: Potential and Kinetic Work-Energy Theorem Conservation of Energy Machines Efficiency Recycled
More informationWeathering and Soil Formation. Chapter 10
Weathering and Soil Formation Chapter 10 Old and New Mountains The Appalachian Mountains appear very different from the Sierra Mountains. The Appalachians are smaller, rounded, gently sloping, and covered
More informationName Class Date. How do mixtures differ from elements and compounds? How can mixtures be separated? What are solutions?
CHAPTER 3 3 Mixtures SECTION Elements, Compounds, and Mixtures BEFORE YOU READ After you read this section, you should be able to answer these questions: How do mixtures differ from elements and compounds?
More informationChemistry 11 Unit 1:Stoichiometry 10/30/2016 /20
Lab #6 Reaction of a Metal with Hydrochloric Acid THE AIM OF THIS EXPERIMENT: Name: Partners: In this experiment, you will react hydrochloric acid with magnesium to produce H 2 gas, and to determine the
More informationExperiment 20-Acid-Base Titration: Standardization of KOH and Determination of the Molarity and/or Percent Composition of an Acid Solution
Experiment 20-Acid-Base Titration: Standardization of KOH and Determination of the Molarity and/or Percent Composition of an Acid Solution In this experiment, you will determine the molarity and percent
More informationCopyright by Harcourt, Inc.
Forces Copyright by Harcourt, Inc. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording,
More informationLecture Outline. Chapter 7: Energy Pearson Education, Inc.
Lecture Outline Chapter 7: Energy This lecture will help you understand: Energy Work Power Mechanical Energy: Potential and Kinetic Work-Energy Theorem Conservation of Energy Machines Efficiency Recycled
More informationMinneapolis Community and Technical College. Separation of Components of a Mixture
Minneapolis Community and Technical College Chemistry Department Chem1020 Separation of Components of a Mixture Objectives: To separate a mixture into its component pure substances. To calculate the composition
More informationHow To Complete and Experiment and Write a Lab Report: Using Questions to Write a Hypothesis With Clear Independent and Dependent Variables
How To Complete and Experiment and Write a Lab Report: Using Questions to Write a Hypothesis With Clear Independent and Dependent Variables 1 I can How to Write a Hypothesis http://www.myteacherpages.com/webpages/jflynt/portfolio.cfm?subpage=1001394
More informationPart II. Cu(OH)2(s) CuO(s)
The Copper Cycle Introduction In this experiment, you will carry out a series of reactions starting with copper metal. This will give you practice handling chemical reagents and making observations. It
More informationESSENTIAL PHYSICAL SCIENCE VOCABULARY
ESSENTIAL PHYSICAL SCIENCE VOCABULARY I. MATTER: ANYTHING THAT HAS MASS AND VOLUME A. mass 1. amount of matter in an object 2. measured in grams B. volume 1. amount of space 2. measured in Liters for liquid
More informationSLOPE STABILITY LAB INTRODUCTION
INTRODUCTION SLOPE STABILITY LAB Slope Stability 1 Hills are made of various types of rocks. Some hills are made large layers of strong rock, others are made of unconsolidated sands. The slope of the hillside
More informationTitle: Gravimetric verification of chloride concentration from a precipitate of silver nitrate.
Title: Gravimetric verification of chloride concentration from a precipitate of silver nitrate. Introduction: Gravimetric analysis is a method of quantitative chemical analysis used to determine the concentration
More informationLimiting Reactants Lab
Name: Teacher s Name: Class: Block: Date: Partners: Limiting Reactants Lab Purpose: Through experimentation, determine the limiting reactant and the percent yield in a chemical reaction that generates
More informationUNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education CHEMISTRY
Centre Number Candidate Number Name UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education CHEMISTRY 06/06 Paper 6 Alternative to Practical Candidates
More informationSection 1 Work, Power, and Machines
Chapter 12 Work and Energy Section 1 Work, Power, and Machines Section 2 Simple Machines Section 3 What is Energy? Section 4 Conservation of Energy Skills Experiment Design SI Units and SI unit conversions
More informationCOEFFICIENTS. - Experimentally, we can usually determine the reactants and products of a reaction
81 COEFFICIENTS - Experimentally, we can usually determine the reactants and products of a reaction - We can determine the proper ratios of reactants and products WITHOUT further experiments, using a process
More informationAdvanced Placement Chemistry Exam #1 ReTake Part II: Free Response
Advanced Placement Chemistry Exam #1 ReTake Part II: Free Response 1. Naturally occurring sample of bromine is a mixture of the two isotopes, bromine-79 and bromine-80. a. How many protons, neutrons, and
More informationName: Block : Date: (Textbook Chapter 9.4) Rate of reaction or reaction rate is how quickly or slowly reactants turn into products.
Science 10: Chemistry! Factors Affecting Reaction Rates (Textbook Chapter 94) Rate of reaction or reaction rate is how quickly or slowly reactants turn into products reaction rate = A slow reaction has
More informationAnswers. Forces. Year 7 Science Chapter 8
Answers Forces Year 7 Science Chapter 8 p173 1 Steering a car involves pulling on the steering wheel. A climb in the plane involves a pull from the propellor and a pull from gravity on the plane. A horse
More informationWhat does rate of reaction mean?
1 of 39 2 of 39 What does rate of reaction mean? 3 of 39 The speed of different chemical reactions varies hugely. Some reactions are very fast and others are very slow. The speed of a reaction is called
More informationChemistry Foundations of Chemistry Test. This is due:
Chemistry Foundations of Chemistry Test This is due: Directions: Answer the following questions on a separate sheet of paper (or on this paper if you have room), staple to this paper (if you used a separate
More informationPre-lab: Read sections 10.6 in the textbook. Complete the attached pre-lab by Thursday, May 22.
Lab 5: Titration of an unknown acid Objective: Determine the concentration of an unknown monoprotic acid by titration, the process that matches the number of moles of base with the number of moles of acid.
More informationReview for 7 th Science 1 st Semester Exam 17-18
Name: Class Period: Review for 7 th Science 1 st Semester Exam 17-18 Directions: 1) Use your 3-ring binder and textbook to complete the REVIEW. 2) Study ALL items on the REVIEW for your semester exam.
More informationHow does Rock become Exposed to the Surface?
Weathering How does Rock become Exposed to the Surface? Most rocks, like granite, form under earth s surface. The rocks uplift and eventually make their way to earth s surface. Conditions on the surface
More informationSubstances and Mixtures:Separating a Mixture into Its Components
MiraCosta College Introductory Chemistry Laboratory Substances and Mixtures:Separating a Mixture into Its Components EXPERIMENTAL TASK To separate a mixture of calcium carbonate, iron and sodium chloride
More informationChapter: Work and Machines
Table of Contents Chapter: Work and Machines Section 1: Work Section 2: Using Machines Section 3: Simple Machines 1 Work What is work? To many people, the word work means something they do to earn money.
More informationNaming salts. Metal Acid Salt. Sodium hydroxide reacts with Hydrochloric acid to make Sodium chloride
Naming salts A salt is any compound formed by the neutralisation of an acid by a base. The name of a salt has two parts. The first part comes from the metal, metal oxide or metal carbonate. The second
More information7-A. Inquiry INVESTIGATION. 322 MHR Unit 3 Quantities in Chemical Reactions. Skill Check. Safety Precautions
Inquiry INVESTIGATION 7-A Skill Check Initiating and Planning Performing and Recording Analyzing and Interpreting Communicating Safety Precautions Wear safety eyewear throughout this investigation. Wear
More information