Chemical changes 5: Acid +metal/metal carbonate

Multiple Choice

When a magnesium strip is added to hydrochloric acid, effervescence is observed. What gas is produced?

• oxygen

• hydrogen

• nitrogen

• carbon dioxide

Metal carbonate and acid reaction (demos)

Poll

Demo 1: What is your hypothesis for the demonstration?

• The reaction is explosive.

• The reaction produces a lot of gas.

• The reaction produces a lot of heat.

• The air inside the bottle heats up and expands.

Let's find out using a different demonstration

Multiple Choice

Baking soda is a metal carbonate while vinegar is an acid. What gas do you think is produced?

• hydrogen

• oxygen

• nitrogen

• carbon dioxide

Multiple Choice

magnesium carbonate + hydrochloric acid --> magnesium chloride + carbon dioxide

• True

• False

Multiple Choice

sodium carbonate + hydrochloric acid --> sodium chloride + hydrogen + water

• True

• False

Multiple Choice

calcium carbonate + hydrochloric acid --> calcium sulfate + carbon dioxide + water

• True

• False