Unit 1 Test: Matter

Students observed a piece of iron change from shiny to rusty. What caused this change?

• a chemical reaction

• a heat reaction

• a cold reaction

• a physical reaction

Which is the best example of a new substance forming?

• lighting a match

• cutting a piece of paper

• popping a balloon

• hitting a nail with a hammer

Which is an example of a different substance being formed?

• glass breaking

• metal melting

• water freezing

• wood burning

Crumpling paper

• Physical Change

• Chemical Change

A Candle Burning

• Physical Change

• Chemical Change

Egg Cooking

• Physical Change

• Chemical Change

Ice melting

• Physical Change

• Chemical Change

What is matter?

• Anything that has mass and takes up space.

• The amount of space that an object occupies or takes up

• a physical combination of 2 or more substances

• a change of matter in size, shape or state of matter without any change in identity.

Water is a universal solvent because it...

• It can be found anywhere
• It freezes when it gets cold
• floats when frozen
• Dissolves most substances

Which of the following is LEAST likely to dissolve in water?

• fats and oils

• sugar molecules

• salt

• all of the substances will dissolve easily in water