Physical properties of matter checkpoint

What is more dense than the corn oil but less dense than water?

• Glycerin

• Plastic

• Wood

• Copper Wire

What happens when a substance is dissolved?

• The substance changes temperature

• The substance is gone

• The substance gets smaller until it is not seen

Tags

NGSS.MS-PS1-2

Why do some pans have plastic handles?

• Plastic is a good conductor of thermal energy

• Plastic is soluble in water

• Plastic is a good insulator of thermal energy

• Plastic is more dense than water

Tags

NGSS.MS-PS3-3

Which materials are magnetic? Choose 2

• stainless steel bracelet

• rubber band

• cast iron pan

• wood block

• silver necklace

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Why are electrical plugs made with the materials shown in the image?

• Plastic is a good conductor while metal is a good insulator.

• Plastic and metal are both inexpensive materials to use.

• Plastic and metal are both good conductors.

• Plastic is a good insulator while metal is a good conductor of electrical energy.

Which substance dissolves?

• Wood, because when you put wood in water, it gets softer.

• Honey, because it mixes evenly with water.

• Paper, because it dissolves in cold water.

• Sand, because when you put sand in water it disappears.

Most winter jackets are made of wool or flannel. This is because

• Wool and flannel are good thermal conductors.

• Wool and flannel are soft to the touch.

• Wool and flannel are good thermal insulators

• 1. Wool and flannel are nice to look at. ​

  
  

Tags

NGSS.MS-PS3-3

A glass marble and a piece of cork of the same shape and size are dropped in water. Which of the following explains correctly why the glass marble sinks while the cork piece floats on water?

• The glass marble is denser than water while the cork is less dense than water.

• The glass marble is less dense than water while the cork is denser than water.

• The glass marble and the cork are both denser than water.

• The glass marble and the cork are both less dense than water.

Tags

NGSS.5-PS1-3

A student was working with 50 mL of water in an experiment. Which of the following statements can be concluded from the picture?

• The volume of a liquid changes when the shape of its container changes.

• The mass of a liquid changes when the shape of its container changes.

• The volume of a liquid stays the same when poured from one container to another container.

• The temperature of the liquid changes as the shape of the container changes.

Which of the following are insoluble? Choose TWO correct answers.

• oil

• sugar

• metal

• lemon juice

• kool aid powder