Year 9 Atoms and Ions

An atom...

• is the smallest unit of matter

• exists in a neutral state

• is made up of protons, neutrons, electrons

• all of the above

How is an atom and ion different?

• An atom has a charge and an ion has no charge.

• An atom has no charge and an ion has a charge.

What is another name for a positive ion?

• atom

• cation

• anion

• proton

What is another name for a negatively charged ion?

• atom

• anion

• cation

• electron

All cations...

• ... are metals

• ... have a positive charge

• ... lose electrons

• ...all of the above

All anions...

• are non-metals

• gain electrons

• have a negative charge

• all of the above

What charge will result if an ion loses electrons?

• positive

• negative

• neutral

What charge results of an ion gains electrons

• positive

• neutral

• negative

The charge of metal ions is...

• positive

• negative

• neutral

The charge of non-metals are...

• positive

• negative

• neutral

Tags

NGSS.MS-PS2-3