Matter Topic 1 Unit Test Review

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

• Photosynthesis
• Melting
• Burning
• Digesting

Which of the following is an example of an element?

• H2CO3
• NaNO3
• Na2B4O
• C

What role do molecules play in PHYSICAL changes?

• They rearrange to form new substances
• They are destroyed
• They remain unchanged
• They are created

What role do molecules play in CHEMICAL changes?

• They rearrange to form new substances
• They are destroyed
• They remain unchanged
• They are created

Can physical changes be reversed?

• No, never
• It depends on the substance
• Always
• Most of the time

The air we breathe is a ________.

• Pure substance
• Heterogeneous Mixture
• Homogeneous Mixture
• Element

Which of the following is a pure substance/element?

• Baking Soda
• Ammonia
• Hydrogen
• Water

Which of the following is NOT a property or characteristic of a mixture?

• Homogeneous or heterogeneous
• Contains only one type of substance
• The particles can be separated in some
• Particles retain their individual properties (not changed into something new)

Select the picture that shows a pure element with only one type of atom.

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