Chem Ch 11 Gas Laws Part 1

The ____ describes the relationship between temperature and velocity for gas particles .

• kinetic-molecular theory

• ideal gas law

• stoichiometry

• activity series

If volume and number of atoms are held constant, Gay-Lussac’s law states that the temperature and pressure of a gas are

• directly proportional

• inversely proportional

• not important

• unable to change

As temperature increases, the energy and frequency of collisions of gaseous molecules

• increase

• decrease

• does not change

What is the standard temperature and pressure (STP) for a gas?

• 0° C and 1 atm

• 0 K and 1 atm

• 0° C and 760 atm

Gay-Lussac’s law states that the pressure of a gas increases as temperature increases, because the kinetic energy (speed) of the gas molecules

• increases

• decreases

• stays the same

According to Boyle’s law, if the volume of a fixed mass of gas is doubled at constant temperature, the pressure

• decreases by half

• decreases by three quarters

• doubles

• quadruples

In an inflated balloon, air pressure is generated by

• The weight of the air molecules inside the balloon

• Air molecules colliding with the inside of the balloon

Volume and pressure are ____ proportional for a given amount of gas when temperature is held constant.

• directly

• inversely

• not

If the Kelvin temperature of a gas in a metal cylinder is doubled (and the volume doesn't change), how will its pressure change?

• The pressure becomes ½ the size of the original pressure

• The pressure becomes 2 times the size of the original pressure

• It won't since the volume doesn't change

A sample of hydrogen gas occupies a volume of 200.0 mL at 0° C. What volume will the gas occupy at 50° C if the pressure remains constant?

• 512 mL

• 237 mL

• 1032 mL