Chemical Reactions

Front

What is a chemical reaction?

Back

A process where substances (reactants) undergo a transformation to form new substances (products).

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

Give an example of a physical change.

Back

Freezing water is an example of a physical change.

Front

What are the properties of matter?

Back

Properties of matter include magnetism, color, odor, density, and mass.

Front

What is a catalyst?

Back

A substance that increases the rate of a chemical reaction without being consumed in the process.

Front

What happens to atoms in a chemical reaction?

Back

Atoms are rearranged to form new substances, but the total number of atoms remains the same.

Front

What is the law of conservation of mass?

Back

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

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change.

Front

What is rust?

Back

Rust is a chemical compound formed when iron reacts with oxygen and moisture.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not create new substances, while a chemical change results in new substances.