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During a chemical change, what happens to the atoms in the substances involved?
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1. Intro to General Chemistry
Physical & Chemical Changes
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Which of the following physical changes involves a change in a substance's state of matter?
A
Breaking a glass window
B
Dissolving sugar in water
C
Melting of ice to form liquid water
D
Cutting a piece of paper
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Understand that a physical change is a change in the form or appearance of a substance without altering its chemical composition.
Recognize that a change in the state of matter means the substance transitions between solid, liquid, gas, or plasma phases.
Analyze each option: Breaking a glass window and cutting a piece of paper change the shape or size but not the state of matter.
Dissolving sugar in water is a physical change but involves mixing substances, not changing the state of matter of sugar or water.
Melting of ice to form liquid water is a physical change where the state changes from solid to liquid, which is a change in the state of matter.
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