Question |
Answer |
What is the state of matter in which materials have a definite shape and volume? |
solid |
Which state of matter has a definite volume but not a definite shape? |
Liquid |
Which state of matter has neither a definite shape nor volume? |
gas |
What is the energy an object has due to its motion?` |
Kinetic Energy |
What is the result of a force distributed over an area? |
pressure |
What is a temperature of 0 Kelvins called? |
absolute zero |
What states that the volume of gas is directly proportional to its temperature in kelvins as long as the pressrue and numbers of gas particles are constant? |
Charle's law |
What states that the volume of a gas is inversely proportional to its pressure if the temperature and the number of particles are constant? |
Boyle's law
|
What is a reversible physical change that occurs when a substance changes from one state of matter to another? |
phase change
|
What happens during an endothermic change? |
The system absorbs energy from its surroundings |
What happens during an exothermic change? |
The system releases energy to its surroundings
|
What happens during vaporization? |
A substance changes from a liquid into a gas |
What is the process that changes a substance from a liquid to a gas at temperatures below boiling point? |
evaporation |
What causes vapor pressure? |
The collisions of water vapor and the walls of the container |
What is condensation? |
The phase change in which a substance changes from a gas or vapor to a liquid. |
What happens in sublimation? |
A substance changes from a solid to a gas or vapor without changing to a liquid first. |
What happens in deposition? |
A gas or vapor changes directly into a solid without first changing to a liquid. |
What is the heat of fusion? |
The amount of energy absorbed as a substance melts. |