Chemical Changes Quiz

The video tutorial explains the composition of matter and distinguishes between chemical and physical changes. It highlights how substances transform during chemical changes and remain unchanged in physical changes. The tutorial also identifies indicators of chemical changes, such as gas production and energy release.

What happens to a substance during a chemical change?

• It evaporates.

• It remains the same.

• It melts.

• It becomes a different substance.

In a physical change, what happens to the chemical structure of matter?

• It becomes a new element.

• It dissolves.

• It changes completely.

• It remains unchanged.

Which process does not involve a chemical change?

• Baking a cake.

• Burning wood.

• Rusting iron.

• Melting ice.

Which of the following is a sign of a chemical change?

• Change in shape.

• Change in color.

• Change in state.

• Change in temperature.

What is a common indicator that a chemical change has occurred?

• The substance is cut.

• The substance boils.

• The substance freezes.

• A new substance is produced.