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- a change in composition and characteristics of matter.
- new substance maybe formed.
- original substance and form may be lost.
- new color and shape
- Fermentation
- Photosynthesis
- Rusting nail
- Spoiling milk
- Digesting food
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoThe definition of a chemical change is that it describes which changes are possible for a substance.
A change in which one or more substances combine or break apart to form new substances.
Wiki User
∙ 16y agoA chemical change is change where one thing becomes something else. In other words, the atoms and molecules combine, break apart (molecules only), or reaarange themselves. For example, when hydrogen gas chemically combines with oxygen gas in a 2:1 ratio, we get water which is something very different than either gases. Another example is burning things. During burning, the compounds in what is being burned combine with oxygen from the atmosphere. Think of paper, if you tear it it's still paper right? But if you burn it, it becomes water, carbon dioxide, smole and ash (carbon). Chemical changes require chemical reactions.
Wiki User
∙ 11y agoA change involving changes in the chemical composition of the reactants.
Wiki User
∙ 12y agoa change which cannot be reverse and which takes internally but chemically is called chemical reaction
such as burning.
Wiki User
∙ 11y agochemical change is changes color,size,shape etc.
Wiki User
∙ 13y agochemical change is the change of one substance into another substance.
Wiki User
∙ 10y agoThe chemical change modify the molecular structure of a substance; a new molecule is formed.
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Is peeling an apple a physical or chemical change?
it is a chemical change
Is stretching copper into wire physical or chemical change?
If you meant to ask, "Is stretching copper into wire a physical or chemical change", it's a physical change.
Is extraction a physical or chemical change?
No. A physical change is a change that does not change the chemical composition of a substance, while a chemical change does change the chemical composition of a substance.
Is crushing charcoal into powder a physical or chemical change?
Chemical I think
Is microwave physical or chemical change?
Chemical change
Is stretching wire into copper a physical or chemical change?
If you meant to ask, "Is stretching copper into wire a physical or chemical change", it's a physical change.
What is meant by the term chemical change Give 2 examples?
A chemical change is a change that imply the change of the nature of molecules. Examples: neutralization of an acidic solution, thermal decomposition and generally all chemical reactions.
Is a odor a physical or chemical change?
AnswerNeither. Odor is not a change at all. Odor is airborne molecules that have a particular smell. A change is a process and odor is not a process. The things which cause odors can be either physical or chemical. For instance, the body odor is caused by chemical changes, but if you open jar of a smelly chemical, that is a physical change (some of the molecules of the chemical are evaporating and are thus airborne).When talking about mixing chemicals and substances, a change in odor is a chemical change.(I assume this is what you meant when you asked is odor a chemical or physical change)
Is burning a fire a physical or chemical change?
Burning is a chemical change.
What type of change when a substance changes into a new substance?
chemical
Is a rotting banana a chemical or physical change?
It's a chemical change
Is peeling an apple a physical or chemical change?
it is a chemical change
Is stretching copper into wire physical or chemical change?
If you meant to ask, "Is stretching copper into wire a physical or chemical change", it's a physical change.
Is cellular respiration an example of a physical change or an chemical change?
its a chemical change
Is oxidizing a physical or chemical change?
chemical change:)
is tarnishing a chemical or a physical change?
It is a chemical change.
Exploding of nitroglycerin is it a chemical or physical change?
it is a chemical change
