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Which of the following changes are chemical changes?
a. Water is frozen.
b. Water is heated up.
c. Gasoline is burned.
d. Gasoline is evaporated.
e. Water is boiled.

Respuesta :

Answer: Option (c) is the correct answer.

Explanation:

A change that does not bring any difference in chemical composition of a substance are known as physical properties.

For example, shape, size, mass, volume, density, etc of a substance are all physical change.

And, a change in which there occurs a difference in chemical composition of a substance then it is known as chemical change.

For example, precipitation, reactivity, toxicity etc are chemical change.

When gasoline is burned then it is a chemical change.

Thus, we can conclude that out of the given options gasoline is burned change is a chemical change.

ayfat23

The chemical change among the given options is

Gasoline is burned.

When gasoline is burned then there will be production of new  substance such as CO2 gas and other particles hence it's considered a chemical change

When water is frozen, heated or boiled, no new substance formed, the product is still water, hence it's physical change

  • When ever gasoline is evaporated, it is considered physical change since no need substance formed

  • A chemical change can be regarded as type of change that occurs when there is transformation of  chemical substance into one or more different substances, example if this is rusting of iron.

  • A chemical change has its differences which distinguish it from physical change, there is no rearrangement of atoms or molecules and there is a  production of a completely new substance.

Therefore, in chemical change, there is always formation of new product.

Learn more at : https://brainly.com/question/23693316?referrer=searchResults

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