C2 AQA KKI

What happens to atoms to become a positive ions?

• Gain electrons
• Lose electrons
• Gain proton
• Lose proton

What happens to atoms to become a negative ions?

• Gain electrons
• Lose electrons
• Gain proton
• Lose proton

What do group 1 elements all have in common?

• All have 1 electron
• All have 1 electron in their outer shell
• All have 1 proton
• All have a masss of 1

What do group 2 elements all have in common?

• All have 2 electron
• All have 2 electron in their outer shell
• All have 2 protons
• They all have 2 shells

What does group number tell us?

• How many electrons in the outershell
• How many shells
• How many protons
• How many electrons

What does period number tell us?

• How many electrons in the outershell
• How many shells (energy levels)
• How many protons
• How many electrons

Metals always form

• Positive ions
• Negative ions

Non metals always form

• Positive ions
• Negative ions

What ion is formed when an atom loses 1 electron?

• Positive 1 ion
• Positive 2 ion
• Negative 1 ion
• Negative 2 ion

What ion is formed when an atom loses 2 electrons?

• Positive 1 ion
• Positive 2 ion
• Negative 1 ion
• Negative 2 ion