Chemistry Quiz

Which of the following is a property of most metals?

• Brittle

• Good conductor of electricity

• Poor conductor of heat

• Dull in appearance

Which metal is the best conductor of electricity?

• Iron

• Copper

• Silver

• Aluminum

Which metal is the least reactive?

• Sodium

• Iron

• Gold

• Magnesium

What is an alloy?

• A pure metal

• A mixture of two or more metals

• A liquid form of a metal

• A gas

Which of the following is an example of an alloy?

• Iron

• Gold

• Bronze

• Copper

Why are alloys stronger than pure metals?

• They have weaker bonds

• Their atoms are arranged in a regular pattern

• Their atoms have different sizes, making them harder to slide past each other

• They contain water molecules

Which method is used to separate sand from water?

• Filtration

• Evaporation

• Chromatography

• Condensation

Which separation method is used to obtain salt from seawater?

• Filtration

• Evaporation

• Sieving

• Distillation

Which technique is best for separating ink colors?

• Filtration

• Distillation

• Chromatography

• Freezing

Which property is used in distillation to separate mixtures?

• Melting point

• Boiling point

• Mass

• Density