Depends on what you mean by "bad". In your apple or on your bicycle, oxidation is a bad chemical change, but maybe you like brown mushy apples or are creating some art project that you happen to need a rusted bicycle for. The same is true for every chemical change. In some situations its good, useful, or generally what you want. And other times, not so much.
Chemical changes can be both good and bad. Some chemical changes are necessary for life to exist, such as in the process of digestion. However, some chemical changes can be harmful, such as those that occur in pollution or the degradation of materials.
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they're not bad, its the application you give to what you do, if you make a cake, you are chemical transforming flour into bread, if you make orange juice, you are physical transforming the orange into juice.
Physical changes involve changes in appearance, shape, or state of matter without altering the chemical composition. These changes are usually reversible and do not produce new substances. On the other hand, chemical changes involve the formation of new substances with different chemical properties. They are often irreversible and can result in the release of energy, such as in combustion reactions.
No, changes in state of matter (such as melting, freezing, boiling) are physical changes, not chemical changes. Chemical changes involve the formation of new substances with different chemical properties.
There are no physical changes. there are only chemical changes.
Do Oreos undertake any chemical changes? Yes. How can Oreo be a chemical changes? Cooking involve chemical reactions, modifications of chemical molecules.
Physical changes are changes that affect the form of a chemical substance, such as changes in state or shape, without changing its chemical composition. Chemical changes, on the other hand, result in the formation of new substances with different chemical properties. Physical changes are usually reversible, while chemical changes are often irreversible.
physical or chemical changes
some chemical changes can be reversed but they are hard to reverse usually
chemical changes
Cooking food can cause chemical Changes