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Answered 2014-11-20 11:02:55

chemical changes affect the chemical properties as well as composition of matter , that result in the formation of a new substance.

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What are 5 chemical changes and how are they chemical changes?

Chemical Changesthe release of gasgreater changes of heatthe generation of lighta change of colorthe formation of a precipitateThese are chemical changes because they change the substance's properties.

Are all physical changes accompanied by a chemical change?

Not all physical changes accompanied by a chemical change. Melting and freezing are two physical changes that are not accompanied by a chemical change.

Are all chemical changes accompanied by physical changes?

Not all chemical changes are accompanied by a visible physical change. Most chemical changes however will be accompanied by a physical change.

Why is distinguishing a chemical change from a physical change?

chemical changes change the basic chemical makeup of something, while a physical change only changes an item's appearance

When a solid changes to a liquid is it a chemical change?

no its not a chemical change its a physical change.

Are all Chemical changes accompanied by physical changes and vice versa?

A physical change is a change in chemical composition. A physical change is a change where chemical composition is not altered. Not all chemical changes are accompanied by a physical change, but some are. The same is true for the reverse.

How is physical change and chemical change different?

Chemical change changes the chemical arrangement and physical configuration. Physical change changes the physical configuration but not the chemical arrangement, e.g water to steam.

How do physical changes differ from chemical changes?

physical changes change the color, shape, or state of matter. chemical change is the change from one substance to another.

A physical change differs from a chemical change in that waste products are formed through chemical changes?

Physical changes are reversible, while chemical changes, for the most part, are not.

When the chemical composition of rock changes what has occurred?

Chemical change not a physical. A CHEMICAL CHANGE

Is iron physical changes or chemical changes?

Iron is a chemical element, not a change.

How does a chemical change affect the composition of matter?

chemical change = chemical reaction. ( the composition of matter always changes). In a chemical change the matter in one thing changes, for example you will know a chemical change has occurred when the color or odor has changes or when a new gas is given off.

Are physical changes chemical reactions?

No, physical changes normally refer to changes other than chemical reactions. If you have a loaf of bread and cut it in half, that is a physical change but not a chemical change. If you eat the bread and digest it, that is a chemical change.

Does a substance undergo a chemical change when it changes state?

yes, a substance undergoes a chemical change when it changes in state.

Is it physical changes or chemical changes when hydrochloric acid reacts with zinc?

It is a chemical change. Hint: if something is a reaction it is probably a chemical change.

List 3 clues that indicate a chemical change?

Changes in color, temperature changes (heat absorbed/released), and changes in chemical reactivity are all indicative of a chemical change.

Is frying a chicken physical or chemical change?

Physical changes can be undone. It is not possible to unfry a chicken. The heat casues chemical changes in the meat and in any coating.

What is changes of chemistry?

A chemical reaction is a chemical change.

Would freezing an object be physical change or chemical change?

Physical changes and Chemical changes are both the same - this would be a reversible change.

Why is Wood burns to form black charcoal a chemical change?

It changes properties.Physical Changes:Physical changes are changes in the appearance but not in the chemical properties. Some physical changes can be undone so the item can be put back to almost its past form.Chemical Changes:Chemical changes are the changes in chemical properties. Chemical changes also change in appearance and/or leave behind traces to prove that a chemical change occurred. Chemical changes create a new substance when they happen, e.g., cooking an egg. Chemical changes cannot be undone as the molecules, patterns and properties have been changed.How to tell them apart:The way to tell the difference between chemical and physical changes is by the changes that it went through. There may be clues that a chemical change appeared because of sound, light, gas production or an odour. A physical change does not involve any of these.

What is chemical change 10 examples?

what are 10 examples of chemical change

Is a change in liqiud to a gas a chemical change?

No, changes of state such as this are physical changes.

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