Matter

Question 1

atom

Answer 1

The smallest unit of an element, consisting of protons, neutrons and electrons

Question 2

density

Answer 2

A measure of the compactness of a substance and is equal to the amount of mass per unit volume.

Question 3

gas

Answer 3

A form of matter in which the molecules are in constant random motion, has no fixed shape or fixed volume.

Question 4

molecule

Answer 4

A group of two or more atoms linked together by sharing electrons in a chemical bond.

Question 5

solid

Answer 5

A form of matter in which the molecules are tightly packed, vibrating about a fixed position, has a definite shape and a definite volume.

Question 6

liquid

Answer 6

A form of matter in which the molecules are tightly packed, but are far enough apart to slide over one another, has no fixed shape but has a fixed volume.

Question 7

. states of matter

Answer 7

One of the principle conditions in which matter exists, either a solid, liquid or a gas.

Question 8

condensation

Answer 8

The change of a gas or vapor to a liquid, either by cooling or being subjected to increased pressure.

Question 9

crystallization

Answer 9

This process occurs when tiny droplets of water in the atmosphere freeze, sometimes joining together in beautiful patterns forming snowflakes.

Question 10

evaporation

Answer 10

The change of a liquid into a vapor at a temperature below the boiling point.