BOOT CAMP #1 BLITZ-2017 RC1

R1 5.5 A) A teacher gives a student four clear sealed containers. Each container holds a different substance. The student records some observations about the substance in each container. Based on these observations, which container most likely holds only gas?

• Container 1. The substance takes the shape of the

  container and is clear. Small particles

  float on top of the substance.

• Container 2. The substance is hard and cube-shaped.

  The surface of the substance is shiny.

• Container 3. The substance is not visible, and the

  container appears empty.

• container 4. The substance is cold and made of

  crystals.

Some students investigate the properties of four objects using a hand lens, a magnet, and a beaker containing water. Their observations are recorded in the table.

Which statement identifies a property that could be used to classify these objects into two different groups?

• Density can be used to separate objects that sink in water from objects that do not.

• Magnetism can be used to separate objects that are attracted by a magnet from objects that are not.

• Solubility can be used to separate objects that dissolve in water from objects that do not.

• Physical state can be used to separate objects that are solids from objects that are not

RC1 5.5A) A student classifies the objects shown based on their physical properties.

Which property cannot be used to classify these objects into more than one group?

• Magnetism

• Mass

• Electrical conductivity

• Solubility in water

RC1 5.5A) A science class tested three properties of different materials. The results are shown in the table below.

Based on the table, which material would be best to use to insulate electrical wires?

• Wood

• Plastic

• Copper

• Steel