A physical change is a change in the state or appearance of a substance, but not in its chemical composition. For example, if you melt a piece of ice, you have changed its state from solid to liquid, but the ice is still made of the same molecules.
Here are some other examples of physical changes:
The ice cube melted, a physical change.
Noun:
Adjective:
The word "physical" comes from the Greek word "physikos", which means "of nature".
The word "physical change" was first used in English in the 17th century. It was used to refer to a change in the physical properties of a substance, such as its shape, size, or state of matter.
What is a physical change? Provide an example.
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