SCIENCE 10 ASSESSMENT -APHRODITE

How does the temperature affect the average kinetic energy of gas molecules? As the temperature decreases the average kinetic energy of gas molecules _______.

• decreases

• fluctuates

• increases

• remains the same

What must remain constant if Charles' law is to be applied to a given sample of a gas?

• mass

• pressure

• temperature

• volume

According to Charles' law, as the temperature of a given sample of gas at constant pressure is increased, the volume will ______________

• decrease

• fluctuate

• increase

• remains the same

420 ml of a gas at 25.0°C is compressed to 210 ml. What is the temperature of the gas after compression?

• 12.5.0°C

• 35.0°C

• 149 K

• 273 K

A sample of helium gas is heated from 20.0°C to 40.0°C. This heating process causes the gas to expand to a volume of 585 ml. What was the original volume of the helium gas?

• 825 ml

• 625 ml

• 548 ml

• 292 ml

Which of the following phenomena best illustrates Charles' Law?

• Carbon dioxide being dissolved in water.

• Breathing apparatus being used by a patient.

• Leavening agent causing the fluffiness of cake products.

• Expansion of the balloon as it is being submerged in hot water.

The following are the properties of gases except __________.

• force

• mass

• temperature

• volume

Boyle's law states that for a given amount of gas at constant temperature, the volume and pressure of a gas vary ______________

• directly proportional

• inversely proportional

• proportional to the square

• no options is correct

At constant temperature, if a gas occupies 312 mL at a pressure of 1.60 atm, what pressure is necessary for this gas to occupy a volume of 500 mL?

• 0.63 atm

• 0.89 atm

• 1.00 atm

• 1.03 atm

For a given sample of a gas, what must remain constant if Boyle's law is to be applied?

• mass

• pressure

• temperature

• volume