When does a chemical reaction take place?

Answer 1

A chemical reaction occurs when the conditions for a chemical reaction exist.

Which is a really lame answer, so let's play with it. You want to make some water and carbon dioxide. You have some hexane, which is C6H14. If you set the hexane on fire, it will react with the oxygen in the air to produce carbon dioxide and water.

Answer 2

When atoms and molecules come together and split, chemical reactions occur. Atoms gain stability through these chemical reactions. They are rapid reactions that occur at given temperatures and at a chemical concentration.

Answer 3

A chemical reaction occurs when the conditions for a chemical reaction exist.

Which is a really lame answer, so let's play with it. You want to make some water and carbon dioxide. You have some hexane, which is C6H14. If you set the hexane on fire, it will react with the oxygen in the air to produce carbon dioxide and water.

Answer 4

Chemical bonding occurs when two atoms with unfull valence orbitals react and exchange or share electrons; the result is either a covalent bond (shared electrons so that each has a full shell) or an ionic bond (the electron is completely removed from one atom and given to the other; the differently charged ions then attract and bond).

Answer 5

Chemical changes occur when a substance combines with another substance to form a new substance. These are called chemical reactions and they are irreversible or very hard to reverse. When a chemical reaction takes place, the atoms are rearranged and the reaction is accompanied by an energy change when the new products are formed.
A chemical change occurs when two substances react and cause a substance to change.making it a chemical change
It will occur when November 6... Joke i don't know too because I'am a researcher too I do this because I'am making science assignment... And that date that is my birth day...
A chemical change occurs when the bonds between atoms are broken and reformed so that the resulting change produces a new substance
new stuf forms
when we eat chicken haha

Answer 6

In your body, in the oven, in a toaster, in the fridge, at power stations, when things grow, and everywhere else you look.

Answer 7

If you mean where it takes place inside an atom, then the answer is this: in the nucleus.

Answer 8

when atoms gain, lose, or share electrons.

Answer 9

by the interactions of their electrons