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What happens to the particles when a physical or chemical change occurs?

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2011-03-03 23:20:56
2011-03-03 23:20:56

it is when particles react to the substance in which it has been placed with

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in a physical change the particles stay the same. in a chemical change the particles are chemically altered.

There is a change in the physical properties of these particles. Their chemical formula remains intact.

The particles are affecting the form of a chemical substance and not turning into a new substance.

Corrosion is a chemical change. It can also cause a physical change in shape, etc, but it is a chemical change.

it happens when •A physical change is reversible, a chemical change is not.•the freezing of water would be a physical change because it can be reversed, whereas the burning of wood is a chemical change - you can't.

When a chemical change takes place, the chemical structure of particles involved changes (i.e. one or more new substances are formed). In a physical change, the physical state of the particles involved changes (e.g. a solid melts and becomes a liquid). The chemical structure of the particles does not change, and no new substance is formed.

it is a physical change, the particles do not combine with the water particles.

No. It is a physical or mechanical change.

Molecules permanently change. In a physical change the effects are reversible.

When a chemical change happens, a physical property is change. A physical property something that you could use to describe something or someone with your senses.

It undergoes a physical change because the matter that makes up the sidewalk does not change. THe side walk goes through a chemical and physical change because the heat makes it constrict by shacking the particles just like it happens with food

The chemical reactions of sulfuric acid are chemical changes.

The reactants are transformed in products of the chemical reaction - if you understand molecules by particles of matter.

Yes, because the chemical composition of the gas particles does not change.

It depends. In most cases, it is a chemical change as the different colored species have different chemical structures. However, it is possible to change color by very finely dividing particles of matter and this is a physical change.

Physical because we can still seperate the particles

It is a chemical change because it is irreversible and the change happens on a molecular level.

It is a physical change. Al that happens is water vapor condensing.


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