1.L'ion bromure est formé à partir de l'atome de brome Br qui a gagné un électron. Comment le note-t-on ?

1. Bromide ion is formed from the bromine atom Br which has gained an electron. How do we know?

Explanation:

To form a bromide ion, a bromine atom must have gained an electron.

i had this on my unit activity, i can you if you are a plato student. are you a plato student?

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.