Revision For Unit 8 Test

Which of the following is a chemical change?

• water evaporating

• Food coloring dissolving in water

• Ironing your clothes

• copper and sulfur heated together to form copper sulfide

When magnesium is burnt in air, one atom of magnesium bonds with one atom of oxygen. In the circles of this particle diagram, write the symbols of the elements that make up the product.

Magnesium and oxygen reacts to form a product called..

When we react metal to an acid, it creates bubbles and forms a gas. What is the name of that gas?

How will you know if the gas produced is hydrogen?

Write the list of equipment and chemicals that you would use to find the pH of a soil sample.

What is the word equation if Zinc reacts with hydrochloric acid to produce zinc chloride and hydrogen?→→

What is the word equation for: Potassium hydroxide reacts with sulfuric acid to produce potassium sulfate and water→

Neutralisation is a reaction between an acid and an alkali where a solution of pH7 is produced.

• True

• False

What is neutralization?