Chemical and Physical Changes

Front

Which of the following examples represents a physical change?

Back

Front

When sugar dissolves in water, what type of change occurs?

Back

Physical change

Front

What type of change occurs when hydrochloric acid reacts with potassium hydroxide to produce a salt, water, and heat?

Back

Chemical Change

Front

Which of the following is evidence of a physical change?

• New substance
• Shape Change
• Light produced
• Gas released

Back

Shape Change

Front

A physical change is

Back

a change where the characteristics do not change the substance

Front

Chewing food to break it down into smaller particles represents a _________ change, but the changing of starch into sugars by enzymes in the digestive system represents a ___________change.

Back

Physical then Chemical

Front

chemical change

Back

any change that results in the formation of one (or more) new chemical substance(s).

Front

Is Gatorade powder dissolving in water a physical or chemical change?

Back

Physical

Front

Which of the following is NOT a clue that a chemical reaction has taken place?

• Changing size
• Changing color
• A gas being formed
• Formation of a precipitate

Back

Changing size

Front

Is forming Playdoh into the shape of a snowman a physical or a chemical change?

Back

Physical Change