Do chemical reactions store energy like rubber bands

There is no way to compare these two contents.

Rubber bands are the simplest mechanical energy changes, and the reaction involves too much.

Yes, many reactions occur instantaneously, and energy is released violently, such as some reactions of ** belong to this category.

Hello ..What a problem!

Chemical reactions occur under certain conditions...

If it helps you, hope.

Yes, as soon as the reaction conditions are reached, the reaction occurs immediately, as if a rubber band had been released.

Yes. Some of the reactions in chemical reactions are endothermic reactions, which are reactions that store energy. Conversely, exothermic should be the release of energy.

A chemical reaction is actually the breaking and rebonding of bonds between different atoms in a molecule.

Different bonds have different amounts of energy.

So that there is a phenomenon of heat absorption and release during the reaction.

Your topic is not very clear.

But it should be understood.

...What a problem!

Chemical reactions occur under certain conditions...

Any chemical reaction is accompanied by a change in energy. Take galvanic batteries as an example: it converts the chemical energy in a chemical reaction into electrical energy.

In the same way, an electrolytic cell converts electrical energy into chemical energy. Electrical energy is only one form, and there are other forms that are converted into heat, light, and so on.

(1) The reaction rate of 2 3 minutes is the largest, because the temperature is higher and the concentration is relatively large;

2) The 0 1 reaction is the slowest because the temperature is relatively low.

3) 2 112 ml (mol) of hydrogen is generated within 3 minutes, which consumes moles of hydrochloric acid, so the reaction rate of hydrochloric acid is.

4) Distilled water (a) or sodium chloride solution (b) can be added

If it's all, it's not Fengxun. Humans can only master a few aster-based technologies. For example, nuclear fusion is still uncontrollable by humans, but that energy is a big drop. Well, nuclear fusion is not a chemical reaction.

Chemical reactions have energy changes, because the total energy of reactants and the total energy of products must not be equal, and some reaction energy changes obviously, such as: combustion of combustibles, mixing and stirring of barium hydroxide crystals and ammonium chloride; However, some reaction energy changes are not obvious, for example, the thermal effect of the reaction between sulfuric acid and barium hydroxide is not the heat of neutralization, and the heat released includes the neutralization and exothermic of H+ and OH-, as well as the reaction heat release of barium ions and sulfate ions.

The process of rearranging atoms in the chemical reaction type must require work done by the outside world or work done by its own reaction, so there must be a transformation of energy. Personally, I think that the classification of compounding, decomposition, metathesis, and displacement reactions is classified according to the arrangement of each element before and after the reaction (this process ensures that the valency of each element remains unchanged, otherwise it is called redox reaction).

All chemical changes are accompanied by changes in energy in the form of endothermic and exothermic.

Change in energy in a chemical reaction: The change in the heat of a chemical reaction.

Wash, dry, wrap in a dry towel or soft paper before placing in your sealed bag. It is best to rub the rubber band with talcum powder before wrapping it. Treat the leather bag with care products before wrapping it.

Yes, there will definitely be a change in energy.

Yes, all chemical reactions are accompanied by changes in energy endothermic or exothermic.

of course

And there must be a physical change in the chemical change.

I'm interested in whether you just want to know the answer, or if you want to know more about it.

If you want to know the answer, AC, everyone else has already said it.

To explain in detail, you need to understand what determines the release or absorption of energy in a chemical reaction – bond energy!

What is Key Energy? It is the energy that needs to be absorbed to break a chemical bond, and it is equal to the energy released to form the chemical bond.

The total bond energy of the product is greater than the total bond energy of the reactant, which means that the energy released is greater than the energy absorbed, and at the same time, it means that the total energy of the reactant is greater than the total energy of the product.

So ac. Forgive me, I'm tired and lazy to type.

a Breaking the chemical bonds in the reactant absorbs less energy than the energy released by forming the chemical bonds in the product.

c The total energy of the reactant is higher than the total energy of the product.

Both of these are true.