Chapter 5 (Collins Stage 7 Science)

A ____ is made up of 2 or more atoms strongly bonded.

What is a substance made after a chemical reaction?

• risk

• product

• reactant

• model

What is something that cant dissolve?

• solution

• soluble

• insoluble

• neutralisation

_____ variable is something you keep the same during an investigation

• control

• dependent

• constant

Which symbol shows a chemical reaction has occured?

• A

• B

• C

• D

You are testing a solution's pH, it reads, 3.02. What type of solution is it?

Identify the product(s) in this word equation

• Sodium

• Sodium chloride

• Sodium and Chlorine

• Sodium and sodium chloride

Magneisum reacts with oxygen to form magnesium oxide. The correct word equation is...

• A

• B

• C

• D

copper sulfate and sodium silicate react to make copper silicate and sodium sulfate. What are the reactants?

Sodium reacts with chlorine to produce sodium chloride. Choose the correct word equation.

• sodium chloride → chlorine + sodium

• sodium + carbon dioxide → sodium carbonate

• sodium + chlorine → sodium chloride