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Explain the concept of physical changes and provide an example.
Explain the concept of physical changes and provide an example.
Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. An example is salt dissolved in water, which can be recovered by allowing the water to evaporate.
What is the main difference between physical changes and chemical changes?
What is the main difference between physical changes and chemical changes?
The main difference is that physical changes do not change the chemical composition of a substance, while chemical changes do.
How are physical changes reversible?
How are physical changes reversible?
Physical changes are reversible using physical means. For example, the recovery of salt dissolved in water by allowing the water to evaporate.
What are some examples of physical properties that undergo change during a physical change?
What are some examples of physical properties that undergo change during a physical change?
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Can physical changes be used to separate compounds into chemical elements or simpler compounds?
Can physical changes be used to separate compounds into chemical elements or simpler compounds?
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