2. Chapter 2 – Chemical Building Blocks

3. 100 200 400 300 400 T/F Blanks LawsMatter 300 200 400 200 100 500 100

4. Row 1, Col 1 Pieces of dry ice (solid carbon dioxide) become smaller through the process of condensation. False, Sublimation

5. 1,2 __________ occurs when particles in a gas lose enough thermal energy to form a liquid. condensation

6. 1,3 According to Boyle’s Law, when the pressure of a gas increases at constant temperature, its volume a. increases b. stays constant c. decreases d. increases, then decreases. C. decreases

7. 1,4 The force of a gas’s outward push divided by the area of the walls of the container is the gas’s a.Volume b.Temperature c.Pressure d.Density C. Pressure

8. 2,1 A liquid does not have a definite shape, but it does have a definite volume. True

9. 2,2 ________ is a measure of the average energy of motion of the particles of a substance. temperature

10. 2,3 A graph of Boyle’s Law shows the relationship between a. volume and density of a gas. b. volume and pressure of a gas. c. temperature and volume of a gas. d. temperature and pressure of a gas. b. Volume and pressure of a gas

11. 2,4 In which state of matter are particles packed tightly together in fixed positions? Solid

12. 3,1 In crystalline solids, the particles are not arranged in a regular pattern. False, amorphous

13. 3,2 When a substance cools, it loses __________ energy to its surroundings. thermal

14. 3,3 When an inflated balloon is exposed to cold air, a. the temperature inside the balloon rises. b. the pressure inside the balloon rises. c. The volume of the balloon increases d. The volume of the balloon decreases D. Volume of balloon decreases

15. 3,4 Which state of matter undergoes changes in volume most easily? Gas

16. 4,1 The freezing point and the melting point of water are the same temperature. True

17. 4,2 According to Charles’s Law, whenever the temperature of a gas at constant pressure decreases, the volume _______. decreases

18. 4,3 A graph of Charles’s law shows the relationship between a.Volume and density of a gas b.Volume and pressure of a gas c.Temperature and volume of a gas d.Temperature and pressure of a gas C. Temperature and volume of a gas

19. 4,4 What is vaporization? A liquid becoming a gas

20. 5,1 At its boiling temperature, the particles of a liquid are moving so slowly that they begin to form regular patterns. False – freezing temperature

21. 5,2 When the temperature of a gas in a balloon increases, the volume of the balloon will ________. increases

22. 5,3 When the temperature of a gas at constant volume increases, its a.Volume increases b.Pressure decreases c.Pressure increases d.Volume decreases c. Pressure increases

23. 5,4 The opposite of vaporization is called… condensation