Chapter 2 Changes in Matter

25 terms by MrsBrown4

Create a new folder

Advertisement Upgrade to remove ads

Prentice Hall Science Explorer Chemical Building Blocks 8th grade

solid

A state of matter that has a definite volume and a definite shape.

crystalline solid

A substance that is made up of crystals in which particles are arranged in a regular, repeating pattern.

amorphous solid

A solid made up of particles that are not arranged in a regular pattern.

liquid

A state of matter that has no definite shape but has a definite volume.

fluid

Any substance that can flow.

viscosity

The resistance of a liquid to flowing.

gas

A state of matter with no definite shape or volume.

temperature

A measure of the average energy of the particles of a substance.

pressure

The force pushing on a surface divided by the area of that surface.

Boyle's Law

The relationship between the pressure and volume of a gas; when volume increases, pressure decreases.

Charles' Law

The relationship between the temperature and volume of a gas; when temperature increases, volume increases.

graph

A diagram that shows how two variables are related.

directly proportional

A term used to describe the relationship between two variables whose graph is a straight line passing through the point (0,0)

vary inversely

A term used to describe the relationship between two variables whose graph forms a curve that slopes downward.

thermal energy

The total energy of a substance's particles due to their movement or vibration.

chemical energy

A form of energy that comes from chemical bonds.

Law of Conservation of Energy

The principle that the total amount of energy remains the same during physical or chemical change.

melting

The change in state from a solid to a liquid.

freezing

The change in state from a liquid to a solid.

vaporization

The change of state from a liquid to a gas.

evaporation

The process that occurs when vaporization takes place only on the surface of a liquid.

boiling

The process that occurs when vaporization takes place inside a liquid as well as on the surface.

condensation

The change of state from a gas to a liquid.

sublimation

The change in state from a solid directly to a gas without passing through the liquid state.

chemical reaction

A process in which substances undergo chemical changes, formatting new substances with different properties.

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set