The diagram shows the process of

• melting

• evaporating

• freezing

• condensing

What happens during EVAPORATION?

• liquid becomes a solid

• solid becomes a liquid

• liquid becomes a gas

• gas becomes a solid

Which object is a CONDUCTOR and will allow electric and thermal energy to flow and go through easily?

• rubber

• metals

• fabric

• glass

Which Item is under the wrong heading in the chart?

• helium

• water vapor

• milk

• ice cube

Which of the following items does not belong with the others because it is an INSULATOR?

• A piece of paper

• A metal paperclip

• A tin can

• An iron horseshoe

A student makes a model of the water cycle using a cup, water, and plastic wrap. After the student places the model near a sunny window, moisture forms on the inside of the plastic wrap. This model shows evidence of gas changing to liquid. Which process is this?

• freezing

• condensation

• melting

• evaporation

A teacher gives a student four clear sealed containers. Each container hold a different substance. The student records observations about the substance in each container. Based on the observations, which most likely holds gas?

• container 1

• container 2

• container 3

• container 4

Students investigated properties of four objects using a hand lens, magnet, and a beaker container water. According to the chart, which statement could be used to classify these objects into two different groups?

• Density can be used to separate objects that sink and float.
• Magnetism can be used to separate objects into a group that is attracted and a group that is not.
• Solubility can be used to separate into a group that dissolves and a group that do not.
• Physical state can be used to separate in solids and not solids.

A student classifies the objects shown based on their physical properties. Which property can NOT be used to classify these objects into more than one group?

• magnetism

• mass

• electric conductivity

• solubility in water

A science class tested three properties of different materials. The results are shown in the table. Which material would be best to use to insulate electrical wires?

• wood
• plastic
• copper
• steel