Planks work with the atomic theory had to do with photons and the ___ which seemed to be proportional to the frequency of vibration.

Name the element in group 17, period 2. (periodic table)

What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons? a) 6 b) 8 c) + 1 d) 12 e) 18

Which describes fat? a: a carbohydrate that produces energy b: a nucleic acid that directs cell function c: a lipid that stores energy d: a protein that speeds up a chemical reaction