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the total mass of the reactants equals the total mass of the products

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βˆ™ 12y ago
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βˆ™ 8mo ago

Chemical reactions involve the breaking and forming of chemical bonds, resulting in the rearrangement of atoms to form new substances. The total mass of the substances before a chemical reaction is equal to the total mass of the substances after the reaction, as dictated by the law of conservation of mass.

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βˆ™ 12y ago

get red bumps and they itch

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Q: What is always true of chemical reactions?
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Related questions

Why do chemical reactions always involve a chemical change?

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


When chemical reactions occur energy is always absorbed?

No, chemical reactions can be endothermic or exothermic.


Why do reactions always involve a change in energy?

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


Is it true that at equilibrium, no chemical reactions take place?

At equilibrium, the rates of the forward and reverse reactions are equal, but chemical reactions are still occurring.


Chemical reactions that occur in cells are called biochemical reactions?

yes. true.


Do Chemical reactions involve the interplay of the electrons of the reacting chemical?

always.


Is it true that catalyst speed chemical reactions but are not changed by them?

Yes, it's true.


Do chemical reactions always involve changes in energy?

no


Is it true that all chemical reactions are reversible?

No, not all chemical reactions are reversible. Some reactions are irreversible, meaning they cannot easily be reversed to reform the original reactants.


Is Electrons in an excited state are more likely to enter into chemical reactions true?

True


Chemical reactions that absorb energy will not occur without a source of energy true or false?

True. Chemical reactions that absorb energy, also known as endothermic reactions, require an external source of energy to proceed. Without this added energy, the reaction will not occur.


Electrolytes determine most of the chemical and physical reactions of the body?

True