HELP ON 10 and 11 will mark BRAINLIST

Which type of reaction always has an element and a compound as reactants

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.

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.