Chemical Changes

Multiple Choice

Why is it important to take organized notes during an investigation or experiment?

• It helps you remember key details and findings.

• It makes your notebook look neat.

• It is required by teachers.

• It allows you to use more paper.

Multiple Choice

What is a chemical reaction?

• A change in matter that creates a new substance

• A change in temperature

• A change in size

• A change in location

Open Ended

Explain how the combination of sodium (Na) and chlorine (Cl) demonstrates the definition of a chemical reaction.

Multiple Choice

Which of the following is an example of a chemical change indicated by a change in color?

• Leaves changing color in autumn

• Water freezing into ice

• Paper being cut into pieces

• Salt dissolving in water

Multiple Select

Which of the following examples show a chemical change happening?

• Baking a cake

• Spraying cologne

• Food rotting

• Spraying Febreeze

Multiple Choice

Which of the following is NOT a sign of a chemical reaction?

• Change in color

• Change in smell

• Formation of gas

• Change in shape

Multiple Select

Which of the following show a chemical reaction?

• Burning candle

• Boiling water

• Melting ice

• An instant cold pack

Multiple Select

Which of the following show a chemical reaction?

• Rust forms on the outside of an iron pipe

• Milk rots and turns chunky

• Water freezes into ice

• Putting beads in water

Multiple Select

Select all the signs that indicate a chemical reaction has occurred.

• Change in color

• Change in shape

• Formation of a new substance

• Change in temperature

Open Ended

Explain how a change in temperature can affect chemical reactions. Provide an example from daily life.

Multiple Select

Which of the following scenarios show a chemical reaction? Select all that apply.

• Color change in leaves

• Burnt toast with a new smell

• Fizzing in a liquid

• Cutting paper