PHSC Gr 9 June Exam Revision

What are substances made up of only one type of atom?

• Compounds

• Mixtures

• Elements

• Solutions

What is the smallest unit of an element that still retains the properties of that element?

• Atom

• Compound

• Molecule

• Ion

Which group of elements is located on the left side of the periodic table?

• Non-metals

• Metals

• Metalloids

• Noble gases

What is the name given to a substance formed by the chemical combination of two or more elements in a fixed ratio?

• Element

• Compound

• Mixture

• Solution

Which element is a halogen?

• Sodium (Na)

• Chlorine (Cl)

• Carbon (C)

• Iron (Fe)

What is the chemical symbol for potassium?

• P

• K

• Pt

• Pb

What is the balanced chemical equation for the reaction of iron with oxygen to form iron oxide?

• Fe + O -> FeO

• Fe + O2 -> FeO

• Fe2O3 -> Fe + O2

• 2Fe + 3O2 -> 2Fe2O3

What is the product of the reaction between magnesium and oxygen?

• Magnesium hydroxide

• Magnesium carbonate

• Magnesium oxide

• Magnesium sulfide

What is the general name for the reaction of metals with oxygen?

• Reduction

• Oxidation

• Neutralization

• Combustion

What is the chemical name for rust?

• Iron hydroxide

• Iron carbonate

• Iron oxide

• Iron sulfide