What are pure substances that cannot be broken down further by chemical reactions called?

• Colloids

• Mixtures

• Elements

• Compounds

Which of the following is an example of a compound?

• Aluminium

• Iron

• Sulphur

• Water

What type of mixture has a uniform composition throughout?

• Heterogeneous Mixture

• Colloid

• Homogeneous Mixture

• Suspension

Which of the following is a characteristic of a suspension?

• Particles cannot be seen

• Cannot be separated by filtration

• Particles settle down when undisturbed

• Uniform distribution of components

What is the term for a solution that contains more solute than is necessary to make a saturated solution?

• Dilute Solution

• Concentrated Solution

• Unsaturated Solution

• Supersaturated Solution

Which of the following is NOT a property of metals?

• Poor conductor

• Malleable

• Ductile

• Lustrous

What is the process of decreasing the concentration of a solute in a solution called?

• Dilution

• Saturation

• Filtration

• Evaporation

Which type of mixture appears homogeneous but is actually heterogeneous?

• Solution

• Suspension

• Colloid

• Emulsion

What type of change is tearing a paper considered?

• Nuclear Change

• Biological Change

• Physical Change

• Chemical Change

Which of the following is an example of a colloid?

• Sand in water

• Milk

• Iron sulphide

• Salt water