when bubbles of gas are produced in a liquid; another way of saying a liquid is fizzing

when a metal reduces in size due to a chemical reaction

when a chemical reaction is carried out to determine the presence of a substance

a compound comprising of a metal and a non-metal

Chemical reactions: acid and metal

Science

Acids and bases

pH scale and universal indicator solution

Practical: red cabbage indicator solution

Metal oxides and non-metal oxides

Chemical reactions: neutralisation

Chemical reactions: acid and metal carbonate

In the unit Making salts, pupils will build on this knowledge to learn about the production of pure salts, and about why acids are acidic and how bases can neutralise them. 

In the Understanding Chemical Reactions unit, pupils learned how atoms rearrange to form new substances during chemical reactions.

This unit covers acids, alkalis, and their neutralisation reactions, the pH scale, and the reactions of acids with metals and alkalis. It also examines the chemical properties of metal and non-metal oxides. Emphasis is on evaluating risks, using appropriate techniques, and making observations.

Physical activity and equipment requiring safe use

Place a glowing splint into the gas and see if it relights.

Bubble the gas through limewater solution and see if it turns cloudy.

Place a lit splint into the gas and see if it makes a squeaky pop sound.

A pupil wants to test the gas that was released when zinc reacted with sulfuric acid. 
Which of the following tests would show that this gas was hydrogen?

The metal will reduce in size when it reacts with an acid.

The metal will increase in size when it reacts with an acid.

Most metals corrode when they react with an acid. What does the word 'corrode' mean in this context?

Complete the word equation for the following reaction:   
magnesium + hydrochloric acid → {{}} + hydrogen.

Which of the following salts is produced when hydrochloric acid reacts with zinc?

When a metal reacts with an acid, it forms a metal salt and hydrogen.

When a metal reacts, it forms bubbles and salt.

When a metal reacts with an acid, it forms a non–metal.

When a metal reacts with an acid, it forms hydrogen gas.

A pupil wrote the following sentence: "When a metal reacts, it forms salt and a gas."
Choose a more accurate sentence from the list.

Which is the correct symbol equation for the reaction between zinc and sulfuric acid?

Tools used to crush and grind substances.

A scale from 1 - 14 which measures acidity or alkalinity of solutions.

A substance which reacts with an acid to form a salt and water.

This forms when a substance dissolves in a liquid.

A soluble substance with a pH greater than 7.

Match the following key terms to the correct description.

Paper that turns different colours depending on the pH of the solution.

A solution that turns different colours depending on the pH of the solution.

Paper that turns red or blue to indicate if a solution is acid or alkaline.

A solution that turns cloudy when carbon dioxide is present.

Which of the following describes what universal indicator is?

Where are metals found in the periodic table?

Match the chemical symbols to the correct metal.

Which types of atom are found in nitric acid (HNO₃)?

Which types of atom are found in sulfuric acid (H₂SO₄)?

Exit Quiz

A pupil wants to test the gas that was released when zinc reacted with sulfuric acid. Which of the following tests would show that this gas was hydrogen?