Materials

If a material is translucent, it means...

• It reflects all light, creating a mirror-like effect.
• It absorbs all light that hits it, making it completely dark.
• It allows some light to pass through but diffuses it, making objects on the other side blurry or unclear.
• It emits light on its own, illuminating its surroundings.

An example of a material that is a good thermal conductor is...

• Glass
• Wood
• Plastic
• Metal

An example of a material that is a good thermal insulator is...

• Concrete
• Plastic
• Wool

• Metal

What happens to a spoonful of sugar when stirred into a mug of hot tea?

• The sugar turns into a solid rock at the bottom of the mug.
• The sugar evaporates into the air.
• The sugar dissolves in the hot tea.
• The sugar melts in the hot tea.

A suspension is...

• a pure substance with uniform composition
• a mixture in which solid particles do not dissolve in a liquid but are spread out throughout it

• a mixture of solid particles dissolved in a liquid

• a solution with gas bubbles dispersed in a liquid

Evaporation is...

• the process of solid turning into gas due to cold energy
• the process of liquid turning into vapor due to heat energy
• the process of gas turning into liquid due to pressure
• the process of vapor turning into solid due to condensation

A solution is...

• A solution is a a solid dissolved into a liquid

• A solution is a liquid compound
• A solution is a gas mixture
• A solution is a solid substance

A way of separating 2 solids is...

• Using a sieve
• Pouring water
• Blowing air
• Using a hammer

Melting means...

• Freezing to solid
• Liquid to gas
• Solid to liquid
• Gas to solid

An example of a transparent material is...

• plastic
• air
• glass
• metal