Mid Year Exam 2016 Grade 7

Transcription

1 Mid Year Exam 2016 Grade 7 Date: Wednesday, January 27, 2016 Time: 1:00 to 3:00 There are many ways to study. Here are a few tips and tricks to help you prepare for your exam. These are just ideas, you don t necessarily have to do them all. 1. Choose a quiet place in your house. 2. Turn off the TV, video games, computer and phone. 3. Prepare notes on index cards. 4. Write down your questions to ask your teacher. 5. Ask questions with your friends. 6. Rewrite your notes. Exam Topics: Safety in the Science Lab A. Safety symbols, (flammable, explosive, toxic). B. Safety rules. The Scientific Method A. Qualitative and quantitative observations a. Describe each and give examples. B. Question and hypothesis a. Write a hypothesis based on the question asked. C. Independant and dependant variables. a. Describe each b. Give examples c. Which variable corresponds with the x axis and which corresponds with the y axis. d. Where the variables are presented in a graph. D. Table of Results a. Draw a table with a ruler. b. Which column corresponds with the x axis and which with the y axis. c. Create a table using information from a paragraph. E. Graphing a. Draw a line graph and a bar graph using a ruler. b. Label the title and the axes. c. Make a proper scale.

2 Properties of Matter A. Characteristic and non characteristic properties. a. What is the difference? b. Give example for each. B. Qualitative and quantitative properties. a. What is the difference? b. Give example for each. C. Mass a. Definition b. How it is measured. c. Unit of measurement. d. Measurement tool and how it is used. D. Volume a. Definition b. How it is measured 3 ways irregular solid, regular solid and liquid. c. Units of measurement. d. Measurement tools and how they are used. E. Temperature a. Definition b. How it is measured. c. Unit of measurement. d. Measurement tool and how it is used. F. Acidity and Alkalinity et basicité a. Definition b. How it is measured. c. Unit of measurement. d. Measurement tool and how it is used. G. Conductivity a. Definition b. Measurement tool H. Boiling point and melting point, (point of fusion). a. Definitions b. Measurement tool c. Units of measurement States of Matter A. Solid, liquid and gas B. Their particles and the links between particles. C. Their volumes in a container. D. Transformations, (transitions), of state initial state and final state. E. The triangle that represents the transitions.

3 Mixtures A. Homogeneous and heterogeneous mixtures definitions and examples. B. Pure substances definitions and examples. Review Questions What are the steps of the Scientific Method? Give each step and a short definition to differentiate them. 1) 2) 3) 4) 5) 6) What if the difference between a quantitative observation and a qualitative observation?

4 Name the 5 senses needed to make a qualitative observation. 1) 2) 3) 4) 5) Name 5 measurement tools we can use to make quantitative observations. 1) 2) 3) 4) 5) Make notes for each step of the Scientific Method My Notes My Questions Hypothesis Independent Variable Definition Which axis of a graph? Which column in a table of results? Dependent Variable Definition Which axis of a graph?

5 Which column in a table of results? Line Graph Draw it with a ruler. Identify title, and each axis. Create a scale for each axis. Bar Graph Draw it with a ruler. Identify title, and each axis. Create a scale for each axis. Table of Results Draw one with a ruler. Which column is the x axis and which is the y axis? What is the definition of mass?

6 Give 3 measurement units used to represent mass, on the same scale.,,. Which unit of measure would you use to find the mass of: an orange: a human: a pen: a tylenol: a TV: Explain how to use a triple beam balance. What is the definition of volume? Name the three units of measure and the measurement tools needed to find the volume of: Regular solid Irregular solid Liquid _ Which unit of measure would you use to find the volume of: an orange: juice: _ a pen: a DVD case: a dictionary:

7 What is a thermometer used for? What is the definition of temperature? Why did we use «0» and «100» for the Celsius scale? 0 indicates: 100 indicates:_ Complete the diagram by writing in the words ACID, BASE and NEUTRAL where they belong. What do we use litmus paper for?

8 Complete the table below: ph level Red Litmus Paper Test Blue Litmus Paper Test Less than 7 Red Blue Blue Neutral 7 Place the substances in order of strongest to weakest in the table below. Substances Lemon Juice PH=3 Battery Acid PH=1 Soap PH=12 Coffee PH=5 Baking Soda PH=8 Bleach PH=13 Vinegar PH=4 Windex PH=9 Acid Base + What are some qualitative and quantitative properties? Quantitative Qualitative

9 What are the characteristic and non characteristic properties? Characteristic Non Characteristic Name the three states and matter, discuss links between their particles and describe the shape in their containers. 1) 2) 3) Draw each state of matter in a container.

10 Name the initial states and the final state for each transition Transition Initial State Final State Sublimation Evaporation Fusion Boiling Solidification Condensation Solid Condensation Complete the triangle:

11 Create a line graph. Indicate the title and label the axes. Time (seconds) Temperature ( )

12 Create a bar graph and a table of results. Indicate the title and label the axes. 25 students like hockey. 40 students like baseball. 30 students like soccer. 15 students like volleyball.

13 Compare homogeneous and heterogeneous mixtures. Homogeneous Mixtures Heterogeneous Mixtures Definition Examples Drawing of Particles

14 Describe a pure substance and give examples: Indicate whether each substance in the box below are heterogenous or homogeneous. Milk and Flour Greek Salad Tap Water Salt and Water Concrete Milk and Cereal Steel Air Carbonated Water Brass Fruit Salad Indicate whether each substance in the images below are heterogenous or homogeneous.