Reactivity of Metals with Water

What is the general product when a metal reacts with water?

• Metal oxide and oxygen

• Metal hydroxide and hydrogen

• Metal chloride and chlorine

• Metal carbonate and carbon dioxide

Which of the following is the correct symbol equation for the reaction of sodium with water?

• Na + 2H2O → NaOH + 2H2

• 2Na + H2O → NaOH + H2

• 2Na + 2H2O → 2NaOH + H2

• Na + H2O → NaOH + H2

What is observed when a more reactive metal reacts with water?

• A slow release of oxygen gas

• No reaction occurs

• Formation of a solid precipitate

• A vigorous release of hydrogen gas

Which metal is more reactive than magnesium but less reactive than potassium?

• Lead

• Calcium

• Iron

• Copper

Which of the following metals is least reactive with water?

• Zinc

• Magnesium

• Gold

• Sodium