A gas has

Ninety-nine percent of all the matter that can be observed in the universe exists as

Matter that has a definite volume but no definite shape is a

If you move a substance from one container to another and its volume changes, the substance is a

Forces of attraction limit the motion of particles most in

What is the result of a force distributed over an area?

Collisions of helium atoms with the walls of a closed container cause

Which of the following factors affects the pressure of an enclosed gas?

Raising the temperature of a gas will increase its pressure if the volume of the gas

The temperature and volume in a closed container of gas remain constant. If the number of particles of gas is increased, the gas pressure will

Which of the following will cause a decrease in gas pressure in a closed container?

The law that states that the volume of a gas is directly proportional to its temperature in kelvins if the pressure and the number of particles is constant is

Boyle’s law states that the volume of a gas is inversely proportional to its pressure if the

What type of change occurs when water changes from a solid to a liquid?

The phase change that is the reverse of condensation is

During a phase change, the temperature of a substance

The phase change that is the reverse of sublimation is

If a solid piece of naphthalene is heated and remains at 80°C until it is completely melted, you know that 80ºC is the

The heat of fusion for water is the amount of energy needed for water to

During which phase change does the arrangement of water molecules become more orderly?

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