The distinction between a chemical change and a physical change is best illustrated by the sentence. A physical change will alter the state of matter, but a chemical change results in the formation of a new substance. Therefore, choice A is right.
<u>How does chemistry change?</u>
Chemical reactions between various substances have changed, leading to the creation of new chemicals. The chemical properties of the substance are unaffected by physical changes. Chemical compounds wouldn't alter as a result of the physical change. The matter's physical state may change as a result of the physical change.
A physical change causes the formation of a new substance, whereas a chemical change alters the state of matter.
A physical change occurs naturally, but a chemical change is exploited by scientists to make new compounds. A physical change will result in a different state of matter, but a chemical change produces a new substance.
So the phrase that contrasts a chemical change with a physical change is the most accurate. A physical change will alter the state of matter, but a chemical change results in the formation of a new substance.
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