REVIEW PACKET FOR CHEM 110 EXAM 1

Transcription

1 REVIEW PACKET FOR CHEM 110 EXAM 1 EXAM FORMAT You will have one hour for the exam. Expert Level (A+): Finished at 30 min Mastery Level (A): Finished between 30 min and 45 min Proficiency Level (B): Finished between 45 min and 60 min Competence Level (C): Finished or almost finished at 60 min Below Competence Level (Below C): Will not finish at 60 min THE EXAM WILL BE GIVEN IN TWO PARTS Part 1 Non-Calculator Sections All vocabulary words in bold in each chapter are your responsibility. I will tell you if you do not need to know a specific vocabulary word. Objective Response: fill-in-the-blank, multiple choice, supply the vocabulary word, supply the definition, true/false, sketches/diagrams, matching. (one or more sections) For all vocabulary words: be able to define, identify the definition, identify examples of the vocabulary word, supply examples for the vocabulary word, and provide comparison/contrast sentences between two vocabulary words. Again, all vocabulary words in bold are your responsibility. There are no calculations for this section, so calculators are not allowed for Part 1 of Exam 1. When you are finished with Part 1 of the Exam, turn it in. You will receive Part 2 of the Exam. Once you turn in Part 1, you may not have it back for any reason. Part 2 Calculation Sections This part of the Exam will contain any calculations of my choosing from the lecture material. You may use your calculators for this section. You may not use your cell phones or computers if you forget your calculators. Scientific Calculators: I will not be able to instruct you on how to use your calculators during the Exam. Test/replace your calculator batteries before the Exam. I have three loaner calculators (first come-first serve). Borrowing one of my calculators will result in a 3%-deduction from your Exam score. A non-returned calculator will result in a 25%-deduction until the calculator is returned or replaced. Page 1 of 7

2 EXAM FORMAT CONT. Appendices An Appendix with relevant tables and unit equations will be stapled to the back of the Exam. A 1%-deduction will be applied for torn off/re-stapled Appendices. Part 1: This is the part of the test with all of the memorized material. You will not get an Appendix for Part 1. You will get all of the appendices for Part 2 of the Exam, as you have already demonstrated the memorized material in Part 1 of the Exam. Copies of the Appendices are currently available on the website. Honesty Statement/Scratch Paper One piece of scratch paper will be stapled to the back. Put your initials in the Honor Code Box. You may use the rest of the sheet as scratch paper. If you need more, the instructor/proctor will provide you with a blank sheet of computer paper. You may not supply your own scratch paper. Any additional scratch paper must be stapled to the very back of the Exam. MATERIAL COVERED Note:If I state you don t need to know this material for the test, I mean it. However, the material might show up in extra credit questions. Lecture: All lecture material between M (8/24) and T (9/8), including T (9/8) Textbook Chapter 1: Introduction to Chemistry (pp. 1 6) Definitions for the entire chapter: science, the scientific method, experiment, hypothesis, (scientific) theory, natural law. chemistry, organic chemistry, inorganic chemistry, biochemistry, green chemistry. Chapter 1.1: Evolution of Chemistry I will not test you on any of the historical information. Please use textbook definitions, rather than the definitions from your notes. I may test you on the following terms: Applying the Scientific Method (p. 3, Gray Box) Chapter 1.2: Modern Chemistry Definitions are already listed. You are not responsible for anything else for this section. Page 2 of 7

3 Chapter 1.3: Learning Chemistry Just skip it! You are not responsible for any material from Chapter 1.3. Textbook Chapter PSS Prerequisite Science Skills (pp ) Definitions for the entire chapter: measurement; instrument; uncertainty; mass; significant figures (notes); significant digits; exponent; scientific notation; exact numbers (from notes) Chapter PSS.1: Measurements Know the common units for measuring length, mass, and volume. Chapter PSS.2: Significant Digits You must be able to rewrite all rules for counting significant digits of a measurement or exact number. You must be able to rewrite all sigfigs calculation rules for multiplication/division. You must be able to rewrite all sigfigs calculation rules for addition/subtraction. You will be given a list of measurements and exact numbers. You will be responsible for stating the number of significant digits. The answers for all calculations on this test (and every test in the future) must have the correct number of significant digits. Chapter PSS.3: Rounding off Non-Significant Digits Most of you are rounding off numbers just fine. For those of you who are in doubt, I will include a few practice problems. I accept minor rounding errors on a test: Example: A final answer ( g) should have a total of three sigdigs. Correct: Minor Error, but I ll accept: Incorrect; marked wrong: 95.5 g 95.4 g 96.0 g Example: A final answer ( g) should have a total of three sigdigs. Correct: Incorrect: Incorrect: 23.1 g 23.2 g 23 g Page 3 of 7

4 Chapter PSS.4: Adding and Subtracting Measurements You must be able to add and subtract measurements. Show your work, units through each step. The answer should have the correct number of sigdigs. The answer should be numerically correct. The units of your answer must match the units in your work. Please remember to circle your final answer. Chapter PSS.5: Multiplying and Dividing Measurements You must be able to multiply and divide measurements. Show your work, units through each step. The answer should have the correct number of sigdigs. The answer should be numerically correct. The units in your answer must match the units in your work. Please remember to circle your final answer. Chapter PSS.6: Exponential Numbers Just know the definition of exponent Be able to identify an exponent when you see one. Be able to supply an example of a number or unit with an exponent. Chapter PSS.7: Scientific Notation Be able to distinguish between standard scientific notation and non-standard scientific notation Be able to recognize whether a measurement has been written in standard scientific notation or non-standard scientific notation. Be able to supply an example of a measurement written in standard scientific notation. Be able to supply an example of a measurement written in non-standard scientific notation. If given a measurement in standard numerical notation, be able to rewrite it in standard scientific notation. (See examples in the practice examples.) If given a measurement in standard scientific notation, be able to rewrite it in standard numerical notation. (See examples in the practice examples.) Page 4 of 7

5 Textbook Chapter 2 The Metric System (pp ) Again, you are not responsible for any of the historical information in this chapter. Definitions for the entire chapter: metric system; basic (common) metric base units; SI Base units; metric prefixes; unit equation; unit factor; reciprocal; unit analysis method; factor-label method; dimensional analysis; percent; cubic centimeters; volume by displacement; density; temperature; Fahrenheit Scale; Celsius Scale; Kelvin Scale You are not responsible for the definition of exact equivalent (p. 32) You are not responsible for the definition of specific gravity (p. 50) You are not responsible for the definition heat, calorie, or heat capacity (pp ) Chapter 2.1: Basic Units and Symbols Know the five basic (common) metric system measurements and their units: Length: meter (m) and/or centimeter (cm) Time: second (s) Temperature: degrees Celsius ( C) Volume: liter (L) and/or milliliter (ml) Mass: gram (g) and/or milligram (mg) and or kilogram (kg) Know the seven SI base measurements and their units Metric prefixes: Know corresponding symbols, names, exponents, quantities, and numbers. For Review Problems, see the Metrics Quiz Review Packet (already on the website). Remember that you are responsible for memorizing all information for giga-, mega-, kilo-, centi-, milli-, micro-, and nano- Remember that you are responsible for having the following metric unit equations memorized: 1000 ml = 1 L 1000 g = 1 kg 1000 mg = 1 g 1000 m = 1 km 1000 mm = 1 m 100 cm = 1 m Page 5 of 7

6 Chapter 2.2: Metric Conversion Factors Be able to write a unit equation for a given metric relationship. Be able to write two unit factors when given a metric relationship. Be able to write two unit factors when given a metric unit equation. Chapter 2.3: Metric-Metric Conversions Be able to use the correct metric unit equation and the correct metric unit factor to convert an initial metric measurement to another metric value. You will be given the metric prefixes table (with memorized material blacked out). Chapter 2.4: Metric-English Conversions You will be given all metric-english conversions that you will need in the appended last page of the exam. When given a metric measurement, use the correct unit factor to convert it to a desired English unit. When given an English measurement, use the correct unit factor to convert it to a desired metric unit. Special: Two-Step Metric Conversions You will have at least three questions in which you will have to use two unit factors to convert an initial value to the desired unit. Chapter 2.5: The Percent Concept Be able to write a unit equation when given a percentage value (and related information). Page 6 of 7

7 Chapter 2.6: Volume by Calculation You must memorize the equation for the volume of a rectangular box. It will not be given to you. There are four variables in the equation for the volume of a rectangular box: V, l, w, and h. When given any three of the variables, you must be able to calculate the unknown variable. You must show all work including units through each step for full credit. Your calculated answers must be numerically correct and have the correct number of significant digits. The units in your answer must match the units in your work for full credit. You could theoretically be given a thickness of sheet of metal problem. You must memorize the equation for the volume of a sphere. (You have used this several times in labs already.) You will not be asked to solve for radius or diameter for the test. Though it would make a great extra credit problem. You will only have to solve for volume. Again, you must show all work including units through each step for full credit. Your numerical answers must be numerically correct and have the correct number of significant digits. The units in your answer must match the units in your work for full credit. Chapter 2.7: Volume by Displacement You will be given the mass of an object, the initial volume of liquid in a graduated cylinder before the object is added, and the final volume of the liquid after the object is added. From that information, you must be able to determine the density of the object. Chapter 2.8: The Density Concept Know the density equation. Be able to rearrange it to determine an unknown variable when given the other two variables. Be able to write a unit equation when given a density value. Chapter 2.9: The Temperature and Chapter 2.10 The Heat Concept Aside from basic definitions, I will not assess you on this material. Page 7 of 7