Grade 6 Science Quiz: Changes

While preparing a salad, Jenny chopped some tomatoes and cucumbers. What type of change is this?

• Chemical change

• Physical change

• Both

• None

Miguel left his bike outside in the rain for a week. When he checked, he saw rust on the metal. What type of change occurred?

• Physical change

• Reversible change

• Chemical change

• Change of state

Anna melted chocolate to make a topping. What kind of change is melting?

• Physical change

• Chemical change

• Irreversible change

• None of the above

During a science experiment, Luis mixed vinegar and baking soda. It bubbled and released gas. What change occurred?

• Physical change

• Evaporation

• Chemical change

• Dissolving

Lara spilled perfume on her hand. After a while, the smell faded. What process happened?

• Condensation

• Melting

• Evaporation

• Boiling

Marco accidentally dropped a glass cup and it broke. What kind of change is this?

• Chemical

• Physical

• Both

• None

Carla baked a cake. After baking, it had a different smell, texture, and color. What change happened?

• Physical

• Reversible

• Chemical

• State change

Rafael dissolved sugar in water. What kind of change is this?

• Irreversible

• Physical

• Chemical

• None

What best describes a chemical change?

• The substance remains the same.

• The shape and size only change.

• A new substance is formed.

• It can be undone easily.

When cooking rice, water turns into steam. What is this process?

• Condensation

• Sublimation

• Melting

• Evaporation