Year 11 DA Unit 2 revision

After electrolysis aluminium oxide, what are the products?

• Al³⁺ and O^2-

• Al and O₂

• Al⁺ and O^-

• Al

Is this diagram endothermic or exothermic

• Endothermic

• Exotermic

• Exothermic

• Endote

If an atom loses two electrons what charge will it have?

• + 2
•  - 2
• +1
• -1

Why do you add excess of the insoluble reactant when making a soluble salt?

• To make sure all the acid is used up

• To separate the solid from the solution

• To make sure a reaction occurs

• To have the reaction happen faster

Covalent compounds

• Share electrons
• transfer electrons
• contain a sea of electrons
• conduct electricity

A salt is formed when nitric acid combines with sodium hydroxide. What is the name of the salt?

• Sodium chloride
• Sodium nitrate
• Hydrogen Nitrate
• Sodium sulphate

Aluminum ions are attracted to the

• anode

• cathode

Which gas reduces iron ore?

• CO

• CO₂

• O₂

• C

This picture shows a...

• Ionic Bond
• Covalent Bond
• Both bonds
• Neither bond

Salts that are made with sulfuric acid are called ______________.

• chlorides
• sulfates
• nitrates
• carbonates