Reaction Quiz-Honors

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The Law of Conservation of Mass states that matter...

• exists in all states and reacts the same

• can not be changed into new substances

• does not change state during a chemical reaction

• cannot be created or destroyed

How many "Al" atoms are present in this formula?

4Al₂O₃

• 2

• 8

• 12

• 4

Which chemicals are the reactants in this chemical reaction?

2Mg + O₂ → 2MgO,

• Magnesium (Mg) and Oxygen (O)

• Magnesium Oxide (MgO)

• Magnesium (Mg) and Magnesium Oxide (MgO)

• Oxygen (O) and Magnesium Oxide (MgO)