Acids with Metals and Carbonates Flashcards

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Note: We may include questions that have multiple correct answers. It's useful to remember specific examples to understand these concepts better.

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What is the general word equation for a reaction between an acid and a metal?

Acid + metal → a salt + hydrogen.

What gas is made when a metal reacts with a dilute acid?

Hydrogen gas is made.

What simple observation shows that a metal is reacting with an acid?

You see bubbles of gas and the metal slowly disappears.

How can you test that the gas from an acid–metal reaction is hydrogen?

Place a lit splint at the mouth of the test tube. Hydrogen burns with a squeaky pop.

Why does copper not react with dilute acids like hydrochloric acid?

Copper is not reactive enough, so it does not react with dilute acids to make hydrogen.

What is the general word equation for a reaction between an acid and a metal carbonate?

Acid + metal carbonate → a salt + carbon dioxide + water.

What gas is made when an acid reacts with a metal carbonate?

Carbon dioxide gas is made.

How can you test for carbon dioxide made in an acid–carbonate reaction?

Bubble the gas through limewater. Carbon dioxide turns limewater milky or cloudy.

How do you work out the name of the salt formed in acid reactions?

The first part comes from the metal, and the second part comes from the acid, for example chloride from hydrochloric acid or sulfate from sulfuric acid.

Write the word equation for the reaction between hydrochloric acid and magnesium metal.

Hydrochloric acid + magnesium → magnesium chloride + hydrogen.

Write the word equation for the reaction between nitric acid and calcium carbonate.

Nitric acid + calcium carbonate → calcium nitrate + carbon dioxide + water.

What visible change happens to a solid metal carbonate when it reacts with an acid?

The solid metal carbonate fizzes and slowly disappears as it forms a solution.