Brewer Science DOL 3.04

Which objects are electrical insulators?

• Eraser, toothpick, cotton ball

• Eraser, paper clip, safety pin

• Toothpick, paper clip, safety pin

• Paper clip, safety pin, aluminum foil

Tags

NGSS.MS-PS2-3

A student is classifying objects. Answering which question will provide the best evidence that an object is a metal?

• What is its mass?

• What is its physical state?

• Does it conduct thermal energy?

• How quickly does it dissolve in water?

Tags

NGSS.MS-PS3-3

Based on their common properties, how should the objects on the lab tray be classified?

• Insulate thermal energy

  Bendable

  Attract to magnets

• Soluble in water

  Attract to magnets

  Conduct thermal energy

• Conduct electrical energy

  Bendable

  Soluble in water

• Conduct electrical energy

  Conduct electrical energy

  Not soluble in water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Which conclusion can be made about the sample based on the table?

• Sample 1 is made of plastic.

• Sample 2 is made of metal.

• Sample 3 is attracted to magnets.

• Sample 4 is less dense than water.

Based on their properties, which of the objects is most likely a metal?

• Object 1, because it is a solid that is less dense than water

• Object 2, because all metals float in water

• Object 2, because metals conduct thermal energy and electricity

• Object 1, because it can be used to provide insulation for thermal energy