Name:_____________________Test Date:_________Study Guide Due:__________ Unit 8: The Kinetic Molecular Theory and The Gas Laws Test Study Guide Topics: States of matter and their phase changes Kinetic Energy and Potential Energy in states of matter and phase changes Heating/Cooling Curves Kinetic Molecular Theory – definitions and relationship to temperature and pressure Physical properties of gases (pressure, volume, temperature) Properties of pressure in a gas including units Individual Gas Laws – equations, graphs, and relationship between variables (direct or inverse) o Boyle’s o Charles’s o Gay-Lussac’s Combined Gas Law – know equation and be able to solve problems Ideal Gas Law – know equation and be able to solve problems Study materials: Unit 8 powerpoint notes and fill-in notes Unit 8 assignment packet Unit 8 lab packet Do-Quizzes Unit 8 Test Study Guide Callahan, Pengitore & Ricafort - 2014 1 Name:_____________________Test Date:_________Study Guide Due:__________ Part 1: The Kinetic Molecular Theory and Phase Changes 1. Label the phase diagram with the following: Solid, liquid, gas phase, freezing point, boiling point, melting point, condensation, evaporation, melting 2. What type of energy is involved in heating a substance that is in one state of matter? 3. What type of energy is involved in changing the phase of matter? 4. Why is it possible for the melting point and freezing point to happen at the same temperature as well as the boiling point and point of condensation to be at the same temperature? 5. If a solid is changing to a liquid it is because heat is being (added/removed) from the system. 6. If a gas is changing to a liquid it is because heat is being (added/removed) from the system. Unit 8 Test Study Guide Callahan, Pengitore & Ricafort - 2014 2 Name:_____________________ Test Date:_____________ Study Guide Due:__________ For questions 7-19, match the correct term to the correct phrase. a. b. c. d. e. f. elastic collisions increased temperature kinetic theory Kelvin scale Celsius scale condensation g. h. i. j. k. l. gas freezing point liquid atmospheric pressure boiling evaporation 7. ____ absolute zero 8. ____ flows by has a definite volume 9. ____ boiling point of water = 100 degrees ____? 10. ____ states that submicroscopic particles are in constant, random motion 11. ____ formation of dew on grass in the morning 12. ____ state of matter that is easily compressible 13. ____ for water, 0°C 14. ____ also means that there is an increase in the kinetic energy of particles 15. ____ striking of particles that involves no loss of energy 16. ____ occurs only at the surface of a liquid 17. ____ vapor pressure = atmospheric pressure 18. ____ normally, 14.7 pounds per square inch at sea level 19. ____ this scale is the termpature directly proportional to kinetic energy Gas Laws Test Study Guide Part 2 (Attachment to Assignment 13) M. Callahan and E. Ricafort 2013 3 Name:_____________________ Test Date:_____________ Study Guide Due:__________ Part 2: The Gas Laws A. Concept Review Questions 1. State the Kinetic Molecular Theory of gases in your own words. 2. Use the KMT to explain the following questions: a) Why does the pressure of gas particles increase when you decrease the volume of the container they are in? b) Why does the volume of a gas increase when you increase the temperature of the gas? c) Why does the pressure of a gas increase when you increase the temperature of the gas? 3. List all the 6 units of pressure. 4. What is standard temperature and pressure? (Give the actual numbers for each.) 5. Identify the three factors that affect gas pressure. Gas Laws Test Study Guide Part 2 (Attachment to Assignment 13) M. Callahan and E. Ricafort 2013 4 Name:_____________________ Test Date:_____________ Study Guide Due:__________ 6. Look at each image below, then answer the questions below for each image: A Question Which Law does this image represent? B A B C C What variables are constant in this law? Explain what is happening to the molecules of the gas? Explain what happens as one variable in the law is changed. Draw the graph for each. Gas Laws Test Study Guide Part 2 (Attachment to Assignment 13) M. Callahan and E. Ricafort 2013 5 Name:_____________________ Test Date:_____________ Study Guide Due:__________ Part B: Problem Solving 7. Write Boyle’s Law: ___________________________ 8. A gas occupies 12.3 liters at a pressure of 40.0 mm Hg. What is the volume when the pressure is increased to 60.0 mm Hg? 9. If a gas at 25.0 °C occupies 3.60 liters at a pressure of 1.00 atm, what will be its volume at a pressure of 2.50 atm? 10. Write the Charles’s Law __________________________ 11. What change in volume results if 60.0 mL of gas is cooled from 33.0 °C to 5.00 °C? 12. Given 300.0 mL of a gas at 17.0 °C. What is its volume at 10.0 °C? Gas Laws Test Study Guide Part 2 (Attachment to Assignment 13) M. Callahan and E. Ricafort 2013 6 Name:_____________________ Test Date:_____________ Study Guide Due:__________ 13. Write Gay-Lussac’s Law: _____________________________ 14. Determine the pressure change when a constant volume of gas at 1.00 atm is heated from 20.0 °C to 30.0 °C. 15. A gas has a pressure of 0.370 atm at 50.0 °C. What is the pressure at 273 Kelvin? 16. Write the combine gas law: ________________________ 17. A balloon contains 2 L of air at 300K (68oF) and 1 atm. What will be the pressure if the volume is 3 L and the temperature is 250 K? 18. A balloon contains 4 L of air at 280 K (45oF) and 1.02 atm. What will be the volume at 297 K and 1.5 atm? Gas Laws Test Study Guide Part 2 (Attachment to Assignment 13) M. Callahan and E. Ricafort 2013 7 Name:_____________________ Test Date:_____________ Study Guide Due:__________ 19. Write the ideal gas law: ______________________ 20. If four moles of a gas at a temperature of 197.32 K have a volume of 12 liters, what is the pressure of the gas? 21. My car has an internal volume of 2600 liters. When the sun heats my car to a temperature of 550 C, the pressure of the gas inside the car is measured at 800 mm Hg. How many moles of gas are in my car? Gas Laws Test Study Guide Part 2 (Attachment to Assignment 13) M. Callahan and E. Ricafort 2013 8