Flame tests

Sodium

• red

• orange

• yellow

• green

Lithium Flame Test?

• red

• orange

• yellow

• green

Metal ion with a lilac flame

• Na⁺
• K⁺
• Na²⁺
• K²⁺

What charge does an electron have?

• Negative
• Positive
• Neutral

An atom becomes _______ when it loses electrons.

• Positive
• Negative
• Neutral
• Invinsible

An atom becomes _________ when it gains electrons.

• Positive
• Negative
• Neutral
• Invinsible

Ions are: 

• atoms with a positive or negative charge
• atoms with no charge
• atoms with ONLY a positive charge
• atoms with ONLY a negative charge

Cations are...

• Positive

• Negative

• Neutral

• Purring

If an atom gains electrons when forming an ion, the charge will be:

• positive

• negative

• neutral

What type of ions do metals form?

• cations

• anions