Physical and Chemical Changes/Properties

Front

What is a chemical change?

Back

A process where a substance transforms into a different substance with different properties.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

List three clues that indicate a chemical change has occurred.

Back

1. Change in temperature 2. Color change 3. Formation of a gas or precipitate.

Front

What are chemical properties?

Back

Characteristics of a substance that determine how it will react with other substances, leading to a chemical change.

Front

What happens to the atoms in a chemical change?

Back

Atoms are rearranged to form new substances.

Front

What is the difference between reactants and products in a chemical reaction?

Back

Reactants are the starting substances that undergo change, while products are the new substances formed as a result of the reaction.

Front

Give an example of a physical change.

Back

Melting ice is an example of a physical change.

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change.

Front

How can you tell if a chemical change has occurred?

Back

By observing changes such as temperature, color, gas production, or the formation of a precipitate.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it is conserved.