Chemistry Key Terminology

Question 1

Atom

Answer 1

The smallest part of an element that can still be recognised as that element

Question 2

Molecule

Answer 2

A particle that consists of more than 1 atom chemically bonded together

Question 3

Element

Answer 3

A substance that consists of only 1 type of atom

Question 4

Compound

Answer 4

A substance that contains more than 1 type of atom chemically bonded together

Question 5

Mixture

Answer 5

A substance that contains more than 1 type of atom not chemically bonded together

Question 6

Nucleus

Answer 6

The centre of an atom made up of sub-atomic particles

Question 7

Proton

Answer 7

A sub-atomic particle that has +1 electrical charge and is found in the nucleus

Question 8

Neutron

Answer 8

A sub-atomic particle that has 0 electrical charge and is found in the nucleus

Question 9

Electron

Answer 9

A sub-atomic particle that has -1 electrical charge and orbits around the nucleus

Question 10

Isotopes

Answer 10

An atom of the same element with a different atomic number

Question 11

Atomic mass

Answer 11

The number of protons and neutrons in an atom

Question 12

Atomic number

Answer 12

The number of protons / electrons in an atom