Physical and Chemical Changes

Front

What is one chemical property of chlorine?

Back

It reacts with sodium

Tags

112.35.c.4.A

Front

A chemist mixes two substances in a test tube and notices that a precipitate forms. What kind of change has occurred?

Back

chemical

Tags

112.35.c.4.A

Front

What is a physical change?

Back

a change in appearance or form but no new substance is created

Tags

112.35.c.4.A

Front

What is a chemical change?

Back

a change in which a new substance is formed

Tags

112.35.c.4.A

Front

What kind of change takes place when water boils and turns into vapor?

Back

chemical

Tags

112.35.c.4.A

Front

Which is NOT a sign of a chemical change?

• change in color
• odor production
• gas/bubbles begin to appear
• precipitate has formed
• change in shape

Back

change in shape

Tags

112.35.c.4.A

Front

A solid that forms when two substances are mixed is known as what?

Back

precipitate

Tags

112.35.c.4.A

Front

Which of these observations would likely be a sign of a chemical change?

• a change in volume as a substance is heated
• a change in odor when two substances mix
• the disappearance of a liquid as it boils
• A liquid has frozen into a solid

Back

a change in odor when two substances mix

Tags

112.35.c.4.A

Front

What kind of change takes place when a student gets a haircut?

Back

physical

Tags

112.35.c.4.A

Front

A chain has rusted. What kind of change has taken place?

Back

chemical

Tags

112.35.c.4.A