Properties of matter Review

What characteristics do magnetic substances have?

• They can give you a "shock" when you touch them
• They can push or pull objects without touching them
• They are always black and cold to touch
• They fall faster than other objects when you drop them

What happens when two north poles of a magnet are placed together?

• they repel
• they attract
• they cancel each other out
• the strength of the magnet is doubled

A magnet cannot move which of the following objects?

• a paper clip

• a nail

• a toothpick

• a staple

Which of these is NOT soluble in water?

• Oil

• Honey

• Salt

• Sugar

Sometimes people add sugar to their tea. Which property of the sugar remains the same when the sugar is in the tea solution?

• The taste of the sugar

• The size of the sugar crystals

• The color of the sugar

• The texture of the sugar

A teacher mixes a white powder into a beaker of water. The powder cannot be seen in the water. The teacher then heats the mixture until the water evaporates and the powder can be seen again. Which property of the powder is the teacher demonstrating?

• Conductivity

• Density

• Mass

• Solubility

If a metal screw is denser than water, will it sink or float?

• Sink

• Float

Of all these layers, which is the least dense?

• The green liquid

• The blue liquid

• The red liquid

• The clear liquid

Put the liquids in order from most dense to least dense?

• 4, 3, 2, 1
• 1, 2, 3, 4
• 3, 4, 2, 1, 
• 4, 3, 1, 2

Why do ice cubes float in a  glass of water?

• the ice cubes are more dense than the water
• the water is more dense than the ice cubes
• the water is more dense than the glass
• the ice is more dense than the glass