Exploring Physical and Chemical Changes

What type of change occurs when an apple is sliced but remains the same in taste and composition?

• No change

• Biological change

• Physical change

• Chemical change

What happens to the properties of a substance during a physical change?

• They become unrecognizable.

• They remain the same chemically.

• They are altered fundamentally.

• None of the above

Can a physical change be easily reversed?

• Always

• Never

• Sometimes

• Rarely

Which process can reverse a physical change by extracting a dissolved solid from water?

• Filtration

• Distillation

• Evaporation

• Condensation

Which example is a physical change?

• Burning wood

• Freezing water

• Digesting food

• Wood rotting

What is a key indicator of a chemical change?

• Production of gas

• Reversibility

• Change in size only

• All of the above

What indicates a chemical change has occurred?

• Change in color only

• Formation of a new substance

• Change in shape

• All of the above

What does not necessarily indicate a chemical change?

• New substance formation

• Color change

• Gas production

• Temperature change

Is the rusting of metal a physical or chemical change?

• Neither

• Both

• Chemical change

• Physical change

Which scenario describes a chemical change?

• Ice melting

• Cutting paper

• Sugar dissolving in water

• Metal rusting