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There will always be changes in one of the reactants. In some chemical reactions, one of the chemicals works as a catalyst to encourage a reaction between two or more chemicals but does not change during the reaction.

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Is reactions a chemical or physical?

Reactions can be both chemical and physical. Chemical reactions involve breaking and forming chemical bonds leading to the formation of new substances. Physical reactions involve changes in state, shape, or form of a substance without changing its chemical composition.


Chemical reactions involve changes in what chemical that join atoms compounds?

Chemical reactions involve changes in the chemical bonds that join atoms to form compounds. During a chemical reaction, these bonds are broken and new bonds are formed, resulting in the rearrangement of atoms and the formation of new compounds.


Which of the following processes does not involve a chemical change in property A rusting B boiling C burning D fermenting?

Boiling does not involve a chemical change in property. Boiling is a physical change in which a substance changes from a liquid to a gas without changing its chemical composition. The other options (rusting, burning, fermenting) involve chemical reactions that result in changes to the chemical composition of the substances involved.


Why do we say that chemical reactions always involve changes in energy?

Chemical reactions involve the breaking and forming of chemical bonds, which requires energy to overcome or release. This results in changes in the potential energy of the system. Additionally, the activation energy required to start a chemical reaction is a clear demonstration of energy change.


What are the factors classified as chemical and physical reaction?

Chemical reactions involve the formation of new substances with different chemical properties, such as rusting of iron. Physical reactions involve changes in the physical state or appearance of a substance without changing its chemical composition, like melting ice.

Related Questions

do oreos undertake any chemical changes?

Do Oreos undertake any chemical changes? Yes. How can Oreo be a chemical changes? Cooking involve chemical reactions, modifications of chemical molecules.


How is corrosion of copper a chemical change?

Corrosion involve chemical reactions - and these are chemical changes.


How can Oreo be a chemical changes?

Cooking involve chemical reactions, modifications of chemical molecules.


Why do chemical reactions always involve a chemical change?

Chemical bonds always break in chemical reactions, causing changes in energy.


Do chemical reactions always involve changes in energy?

no


Is reactions a chemical or physical?

Reactions can be both chemical and physical. Chemical reactions involve breaking and forming chemical bonds leading to the formation of new substances. Physical reactions involve changes in state, shape, or form of a substance without changing its chemical composition.


What is the difference between chemical reation and nuclear reation?

Chemical reactions involve the breaking and forming of chemical bonds between atoms to create new substances, while nuclear reactions involve the changes in the nucleus of an atom, resulting in the formation of different isotopes or elements. Chemical reactions typically involve changes in electron distribution, whereas nuclear reactions involve changes in the structure of the atom's nucleus. Additionally, nuclear reactions release much larger amounts of energy compared to chemical reactions.


Why is burning of gas considered a chemical change?

All burning reactions involve chemical reactions (chemical changes).


Why do reactions always involve a change in energy?

Chemical bonds always break in chemical reactions, causing changes in energy.


Chemical reactions involve changes in what chemical that join atoms compounds?

Chemical reactions involve changes in the chemical bonds that join atoms to form compounds. During a chemical reaction, these bonds are broken and new bonds are formed, resulting in the rearrangement of atoms and the formation of new compounds.


What are chemical reactions also known as?

Chemical reactions are also known as chemical changes because they involve the rearrangement of atoms to form new substances with different properties.


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.