Why do molecules change speed?. Claim 1: Molecules speed up when energy is created and slow down when energy is destroyed.

Claim 2: Molecules speed up when they get energy from other molecules and slow down when they give energy to other molecules.
is it claim 1 or 2

So  if  the sum of the enthalpies of the reactants is greater than the products, the  reaction  will be  exothermic.  if  the products side has a larger enthalpy, the  reaction  is  endothermic. you may wonder why  endothermic reactions, which soak up energy or enthalpy from the environment, even happen

Iheard he was so amazing they named a whole city after him somewhere in california, absolute hero, they named a country in europe after him it’s called france, they just decided to change the o to an e because yknow, bants ennit