Physical and Chemical Changes

Front

Which is an example of a physical change?

Back

A glass breaking

Front

A change in color or smell is a sign of what?

Back

chemical change

Front

Chemical changes occur when the molecules of one substance are rearranged to form a different substance. Which of the following is a chemical change?

bending

,

burning

,

freezing

,

shredding

Back

burning

Front

Which of Daniel's chores is an example of a chemical change? Options: Cooking eggs for breakfast, Oiling a squeaky door hinge, Sewing a hem on a pair of pants, Digging weeds in the flowerbeds.

Back

Cooking eggs for breakfast

Front

How does a cook use physical changes when making food?

Back

Rolling out a pie crust

Front

A chemical change forms a new kind of matter. Which is a chemical change? Options: Rusting steel, Cutting Bread, Pouring Water, Breaking Glass

Back

Rusting steel

Front

What do you observe when steel wool has rusted?

Back

The steel wool turns red and brittle

Front

What observations show that decaying is a chemical change?

Back

A change in color and smell

Front

Where should Bonnie store steel wool to keep it from rusting?

Back

In a dry place

Front

Classify the process: Wood burning in a brush pile producing heat and ashes.

Back

Chemical