Question

Chemical Properties

Assignment Active
Identifying Changes of Matter
Which of these are physical changes in matter? Check all that apply.
Oboiling water
a pencil being sharpened
exploding dynamite
Ofreezing water
Orotting cheese

Answer 1

Boiling water, freezing water, and sharpening a pencil are physical changes.

Step-by-step explanation:

Physical changes in matter are changes that do not alter the chemical composition of a substance. In the given options, boiling water, freezing water, and sharpening a pencil are examples of physical changes. Boiling water is a physical change as it changes the state of water from liquid to vapor without altering its chemical composition. Freezing water is also a physical change as it changes the state of water from liquid to solid without altering its chemical composition. Sharpening a pencil is a physical change as it only changes the shape and size of the pencil without altering its chemical composition.

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