Answer:
Protons, Neutrons, and Electrons are all in atoms so the one not present would be the Element since Elements are made of atoms.
Explanation:
Reactions which emits energy in the form of light or heat are called exothermic reactions.
reactant(s) --------------> product(s) + heat
Reactant which absorbs energy in the form of heat or light are called endothermic reactions.
reactant(s) + heat -----------> product(s)
Hope this helps!
A hydronium ion has a charge of one plus
Answer:
Heat travels faster in solids.
Heat travels slower in gases.
Explanation:
