Unit 2 Matter

Front 1

Boiling

Back 1

When the internal pressure of a liquid matches the surrounding pressure.

Front 2

Gas

Back 2

Phase of matter with no definite shape, no definite volume, no definite size. A gas fills whatever container it is in. Particles move rapidly and randomly.

Front 3

Liquid

Back 3

Phase of matter with no definite shape, no definite size, but does have a definite volume. Particles move past each other easily.

Front 4

solid

Back 4

Phase of matter that has a definite size, definite shape, and definite volume. Particles vibrate in a “fixed” position

Front 5

Plasma

Back 5

Phase of matter that is a gas which can conduct electricity. Rare on earth, but the most common phase of matter in the universe

Front 6

Latent Heat

Back 6

Energy required for a substance to change phase. Sometimes referred to as “hidden heat”.

Front 7

Melting

Back 7

change from the solid phase to the liquid phase. Substance must gain energy.

Front 8

Freezing

Back 8

To change from the liquid phase to the solid phase. Substance must lose energy.

Front 9

Vaporization

Back 9

To change from a liquid to a gas at temperatures which are at or above the boiling point of the liquid.

Front 10

Evaporation

Back 10

To change from a liquid to a gas at temperatures which are below the boiling point of the liquid.

Front 11

Sublimation

Back 11

To change from the solid phase directly to the gas phase without a liquid intermediate phase

Front 12

Freezing Point

Back 12

Temperature at which a liquid changes to a solid

Front 13

Melting Point

Back 13

Temperature at which a solid changes to a liquid.

Front 14

Boiling Point

Back 14

Temperature at which a liquid changes to a gas

Front 15

Condensation

Back 15

To change from a gas to a liquid. Substance must lose energy

Front 16

States of Matter

Back 16

Phase. Solid, liquid, gas, plasma

Front 17

Crystalline solid

Back 17

Matter with a regular repeating pattern to the atoms or molecules. Melts and freezes at a specific temperature

Front 18

Amorphous solid

Back 18

Matter with no regular repeating pattern to the atoms or molecules. Melts and freezes over a range of temperatures

Front 19

Pressure

Back 19

Amount of force acting over a given area. P=F/A

Front 20

Charle's Law

Back 20

A change of temperature in a container of gas causes a change in volume that is directly related to the temperature change, if the pressure remains the same (ex. double
the temperature = double the volume).

Front 21

Boyle's Law

Back 21

The pressure change in a container of gas is inversely proportional to the change in volume if the temperature remains the same. (ex. double the volume = half the
pressure).

Front 22

Endothermic

Back 22

Requires the addition of heat energy to cause the phase change or maintain
the chemical reaction.

Front 23

Exothermic

Back 23

Heat energy is given off by the phase change or the chemical reaction

Front 24

fleißig

Back 24

hard-working