What is not part of every chemical reaction? a. reactants b. products c. gases d. energy

Solar energy is energy from the sun that is converted into thermal or energy. a. nuclear b. mechanical c. electrical d. chemical

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.