Defenitions- Chemistry

Question 1

atom?

Answer 1

The smallest unit of an element

Consists of a nucleus in the centre and is surrounded by an electron.

Question 2

Nucleus?

Answer 2

The centre of an atom

It is composed of protons an neutrons

It contains the most mass of an atom

Question 3

Proton?

Answer 3

It is a positivley charged particle

It is found within a nucleus

Question 4

Neutron?

Answer 4

It is neutral

Uncharged particle

Found within an nucleus

Question 5

Electron?

Answer 5

Negatively charged particles

Located within shells that surround an atoms nucleus

Question 6

Ionisation

Answer 6

Atoms: When you add or take away electrons. Changing its charge

Question 7

Weighted mean

Answer 7

These different masses are used to calculate an average or weighted mean, which is based on the relative amounts of each type of atom. This number is referred to as the relative atomic mass and is usually not a whole number

Question 8

Ductile

Answer 8

can be made into a wire.

Question 9

Cations

Answer 9

Positively charged ions are called cations.

Question 10

Anions

Answer 10

Negatively charged ions are called anions.

Question 11

Iconic compounds

Answer 11

when atoms come in contact with each other and lose or gain electrons. Compounds formed in this way are called ionic compounds.