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Unit 11 Review

Unit 11 Review. Gases. 1. Why is a gas easier to compress than a liquid or a solid?. Its volume increases more under pressure than an equal volume of liquid does. Its volume increase more under pressure than an equal volume of solid does.

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Unit 11 Review

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  1. Unit 11 Review Gases

  2. 1. Why is a gas easier to compress than a liquid or a solid? • Its volume increases more under pressure than an equal volume of liquid does. • Its volume increase more under pressure than an equal volume of solid does. • The space between the particles is much less than the space between liquid or solid particles. • The volume of a gas’s particles is small compared to the overall volume of a gas.

  3. 2. Why does the pressure inside a container of gas increase if more gas is added to the container? • There is an increase in the number of collisions between the particles and the walls of the container. • There is an increase in the temperature of the gas. • There is a decrease in the volume of the gas. • There is an increase in the force of each collision between the particles and the walls of the container.

  4. 3. As the temperature of the gas in a balloon decreases, which of the following occurs? • The volume of the balloon increases. • The average kinetic energy of the gas decreases. • The gas pressure inside the balloon increases. • All of the above.

  5. 4. Which of these changes would NOT cause an increase in the pressure of a contained gas? • The volume of the container is increased. • More of the gas is added to the container. • The temperature is increased. • The average kinetic energy of the gas is increased.

  6. 5. When the Kelvin temperature of an enclosed gas doubles, the particles of the gas • Move faster • Strike the walls of the container with less force • Decrease in average kinetic energy • Decrease in volume

  7. 6. When the pressure and number of particles in a gas are constant, which of the following is also constant? • The sum of the volume and temperature in Kelvin. • The difference of the volume and temperature in Kelvin. • The product of the volume and temperature in Kelvin. • The ratio of the volume and the temperature in Kelvin.

  8. 7. Under what conditions of temperature and pressure is the behavior of a real gas most like that of an ideal gas? • Low temperature and low pressure • Low temperature and high pressure • High temperature and low pressure • High temperature and high pressure

  9. 8.Which gas law can be used to calculate the number of moles of a contained gas? A. Boyle’s B. Charles C. Combined D. Ideal

  10. 9. If a sealed syringe is plunged into cold water, in which direction will the syringe piston slide? A. In B. Out C. No change D. Not enough information

  11. 10. Which of the following gases would have the greatest velocity if each molecule had the same kinetic energy? A. ammonia B. hydrogen C. oxygen D. water

  12. 11. Which of the following gases is the best choice for inflating a balloon that must remain inflated for a long period of time? A. Nitrogen B. Hydrogen C. Argon D. Helium

  13. Answers 1. D 9. A 2. A 10. B 3. B 11. C 4. A 5. A 6. D 7. C 8. D

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