Atoms, Ions & Bonding

The atomic symbol of chlorine is

• C

• 17

• Cl

• Ch

The atomic number of copper is

• 63

• 15

• 27

• 29

Electrons have a

• neutral charge

• negative charge

• positive charge

Tags

NGSS.HS-PS1-2

NGSS.HS-PS2-5

Protons have a

• neutral charge

• negative charge

• positive charge

A cation has

• more electrons than protons

• a negative charge

• a positive charge

• a neutral charge

A cation is formed when

• an atom gains electrons

• an atom gains protons

• an atom loses electrons

• an atom loses protons

Tags

NGSS.HS-PS1-1

An anion has

• a negative charge

• a positive charge

• no charge

• more protons than electrons

• 20 protons and 20 electrons

• 20 protons and 22 electrons

• 22 protons and 20 electrons

• 20 protons and 18 electrons

Tags

NGSS.HS-PS1-1

• 9 protons and 7 electrons

• 9 protons and 10 electrons

• 9 protons and 9 electrons

• 8 protons and 9 electrons

Tags

NGSS.HS-PS1-1

If an atom loses 3 electrons, what charge does it have?

• +3

• -3

• 0