Select all that apply. When the products of a reaction have less energy than the reactants:
The reaction is exothermic.
The reaction is endothermic.
The reactants lost internal energy.
The change in enthalpy is positive.

The reaction is endothermic

Explanation:

we know that the reactants had to get energy from its surroundings which means that the reaction is endothermic

chemical properties are the characteristic of matter which can only be observed by changing the chemical identity of a sample like flammability reactivity and toxicity.