Exploring Physical and Chemical Changes

Which of the following is a physical change?

• Burning wood

• Melting ice

• Rusting iron

• Baking a cake

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DOK Level 2: Skill/Concept

Which process is an example of a chemical change?

• Dissolving sugar in water

• Freezing water into ice

• Cooking an egg

• Breaking a glass

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Identify the change that occurs when a piece of paper is torn.

• Physical change

• Chemical change

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Which of the following is an example of a physical change?

• Iron rusting

• Water boiling

• Wood burning

• Milk souring

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DOK Level 2: Skill/Concept

What type of change occurs when vinegar reacts with baking soda?

• Physical change

• Chemical change

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Which of the following is a chemical change?

• Cutting a piece of paper

• Melting butter

• Digesting food

• Evaporating water

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How does temperature affect the rate of a chemical change?

• It decreases the rate

• It has no effect

• It increases the rate

• It stops the change

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Which of the following is NOT a physical change?

• Crushing a can

• Dissolving salt in water

• Burning a candle

• Chopping vegetables

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

• They form new substances

• They change their arrangement

• They disappear

• They become charged

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Which of the following is an example of a chemical change?

• Ice melting

• Salt dissolving in water

• Silver tarnishing

• Water boiling

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DOK Level 2: Skill/Concept