Balancing Chemical Equations Quiz

What is the first tip for balancing chemical equations with polyatomic ions?

• Separate polyatomic ions on both sides.

• Balance polyatomic ions first, then single elements.

• Keep polyatomic ions together if they appear on both sides.

• Ignore polyatomic ions when balancing.

In the example with iron, potassium, and sulfate ions, what is the first element to be balanced?

• Iron

• Hydroxide

• Sulfate

• Potassium

How many potassium ions are there on the product side after balancing the equation in the first example?

• 2

• 3

• 6

• 1

What is the second tip for balancing chemical equations when OH and H2O are on opposite sides?

• Ignore H2O and balance OH first.

• Rewrite H2O as HOH.

• Balance H2O before OH.

• Combine OH and H2O into one compound.

In the example involving aluminum and sulfate ions, how many OH ions are there on the reactant side after balancing?

• 1

• 2

• 6

• 3