PHYSICAL AND CHEMICAL CHANGE

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties.

Front

What is a physical change?

Back

A physical change is a process that alters the form or appearance of a substance but does not change its chemical composition.

Front

Give an example of a chemical change.

Back

Burning wood is an example of a chemical change.

Front

Give an example of a physical change.

Back

Making lemonade is an example of a physical change.

Front

What happens to matter during a chemical change?

Back

During a chemical change, matter is transformed into one or more new substances.

Front

What is matter?

Back

Matter is anything that takes up space and has mass.

Front

Is dissolving salt in water a physical or chemical change?

Back

Dissolving salt in water is a physical change.

Front

What are the signs of a chemical change?

Back

Signs of a chemical change include color change, gas production, temperature change, and the formation of a precipitate.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What is an example of a reversible physical change?

Back

Melting ice is an example of a reversible physical change.