Balancing Equations

• Two Potassium + Bromine two -> Potassium Bromide

• Potassium + Bromine

  -> Potassium Bromate

• Potassium + Bromide

  -> Potassium Bromide

• Potassium + Bromine -> Potassium Bromide

Choose the correct symbol equation for magnesium oxide.

• MgO + O -> MgO₂

• Mg₂ + O -> MgO

• 2Mg + O₂ -> 2MgO

• 2Mg + O₂ -> MgO₂

What is the charge on the ions formed in group 1?

• -1
• +2
• 0
• +1

What is the charge on the ions formed in group 6?

• -2
• -1
• 0
• +1

Select the correct symbol equation for sodium chloride.

• NaCl₂

• NaCl

• Na2Cl

• NaCL2

What is the charge on the ions formed in group 5?

• +3
• +2
• -3
• -1

What is the charge on the ions formed in group 2?

• 2+
• 1+
• 3-
• 4+

What is the balanced symbol equation for sodium chloride?

• 2Na + Cl -> NaCl₂

• 2Na + Cl₂ -> 2NaCl

• Na + Cl -> NaCl
• 2Na + 2Cl -> 2NaCl

Complete the word equation:

Magnesium + .... --> magnesium oxide

• Magnesium oxide

• Magnesium

• Oxide

• Oxygen

What is the word equation for K₂S?

• Potassium oxide
• Sodium sulfide
• Potassium sulfide
• Calcium sulfide