What happens when air masses collide?

When two air masses collide they do not mix, instead they push against each other. If a cold air mass and a warm air mass meet then the warm air rises because it is lighter then cold air.The boundary where two air masses meet is called a front.

Explanation:

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sodium (na), for example, has one electron in its valence shell. this is an unstable state because that valence shell needs eight electrons to be full. in order to fill its valence shell, find a way to add seven electrons to its valence shell

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.