C3.1 - Particles & Elements

Question 1

Atom

Answer 1

The smallest unit of an element

Question 2

Atomic mass

Answer 2

The quantity of matter contained in an atom of an element

Question 3

Atomic number

Answer 3

The number of protons in the nucleus of an atom

Question 4

Boiling

Answer 4

Bringing a liquid to the temperature at which it bubbles and turns to vapour

Question 5

Condensing

Answer 5

Change or cause to change from a gas or vapour to a liquid

Question 6

Contract

Answer 6

To draw more closely together

Question 7

Density

Answer 7

The measurement of how tightly a material is packed together

Question 8

Deposition

Answer 8

When a substance in gas form changes states to become a solid

Question 9

Diffusion

Answer 9

The movement of molecules in a fluid from areas of high concentration to areas of low concentration

Question 10

Electron

Answer 10

A particle with a charge of negative electricity

Question 11

Neutron

Answer 11

An elementary particle without an electrical charge

Question 12

Liquid

Answer 12

A substance where the particles are still close together, but not as tightly bonded or in a fixed structure like a solid

Question 13

Solid

Answer 13

A state of matter characterized by particles arranged such that their shape and volume are relatively stable

Question 14

Mass

Answer 14

The amount of matter or substance that makes up an object

Question 15

Melting

Answer 15

A physical process that results in the phase transition of a substance from a solid to a liquid

Question 16

Molecule

Answer 16

Two or more atoms connected by chemical bonds

Question 17

Proton

Answer 17

A subatomic particle with a positive electrical charge

Question 18

Thermal expansion

Answer 18

When an object expands and becomes larger due to a change in its temperature

Question 19

Volume

Answer 19

The amount of space the object takes up