physical and chemical changes

Front

What is a chemical change?

Back

A chemical change is a process where new substances are formed, often accompanied by signs such as fizzing, foaming, or color change.

Front

What is a physical change?

Back

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

Front

What are some signs of a chemical change?

Back

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

Front

Give an example of a chemical change.

Back

Baking cookies is an example of a chemical change, as new substances are formed during the baking process.

Front

Give an example of a physical change.

Back

Melting ice is an example of a physical change, as it changes from solid to liquid without forming a new substance.

Front

What happens during a chemical reaction?

Back

During a chemical reaction, reactants are transformed into products, resulting in the formation of new substances.

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 the formation of new substances.

Front

What is an indicator of a chemical reaction?

Back

The formation of gas bubbles is an indicator that a chemical reaction has occurred.

Front

What is a precipitate?

Back

A precipitate is a solid that forms from a solution during a chemical reaction.

Front

What is an example of a sign of a chemical change?

Back

Fizzing or bubbling when vinegar is mixed with baking soda is a sign of a chemical change.