What combines to form compounds? a. atoms of elements b. molecules c. minerals d. valences

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

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.

Which proportionality applies to avogadro’s law?