Chemical Reactions : Physical and Chemical ChangesChanges

Front

What is a chemical change?

Back

A chemical change occurs when molecules react with each other and form new molecules.

Front

Is bending copper wire a physical or chemical change?

Back

Bending copper wire is a physical change.

Front

What kind of change is blending ingredients into a smoothie?

Back

Blending ingredients into a smoothie is a physical change.

Front

What happens in all chemical changes?

Back

In all chemical changes, a new product is formed.

Front

What indicates a chemical change when roasting a marshmallow?

Back

A chemical change occurs because the marshmallow changes in taste, color, and smell.

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

Give an example of a physical change.

Back

An example of a physical change is melting ice into water.

Front

What is a chemical reaction?

Back

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

Front

What are some signs of a chemical change?

Back

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

Front

Is cooking an egg a physical or chemical change?

Back

Cooking an egg is a chemical change because it changes the egg's structure and properties.