Physical vs Chemical article quiz

What is a physical change?

• A change that can only be observed under a microscope

• A change where chemical bonds are broken and new ones are formed

• A change in the size, shape, or state of matter without breaking chemical bonds

• A change that results in the formation of a new substance

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8.5

Which of the following is an example of a physical change (choose two answers)?

• Lighting a match

• A piece of metal rusting

• Dissolving sugar in water

• Burning a piece of paper

• cutting a fruit into smaller pieces

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What remains the same during a physical change?

• The weight of the substance

• the state of matter (solid, liquid, or gas)

• The chemical composition of the substance

• The temperature of the substance

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What is a sign of a chemical change?

• Freezing water

• Release of gas

• Melting of ice

• A change in shape

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What happens during a chemical change?

• The state of matter changes

• The substance undergoes a change in temperature only

• Chemical bonds are broken or reformed to create new substances

• No new substances are formed

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Which of the following indicates that a chemical change has occurred (choose two answers)?

• change in shape of the substance

• solid "disappears" in a liquid while mixing

• A new smell apears

• Formation of a precipitate (new solid) while mixing liquids

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