what is the first element on the periodic table
hydrogen
who discovered the atom
dalton
the measurement of the amount of matter in a object
density
what is a proton
positive charged subatomic particle
what is kmt
kinetic molecular theory
atomic # of br
35
what did the gold foil experiment discover
nucleus
the amount of space that a substance or object takes up
volume
what is a neutron
neutral subatomic particle
what are the main states of matter
solid, liquid, gas
number of neutrons in agron
22
what did rutherford discover
nucleus
anything that has density and occupies space
mass
what is a electron
negatively charged subatomic particle
what is it called when a solid turns into a liquid
melting
atomic mass of fe
55.8
what did bohr discover
shells
number of protons in magnesium
12
dalton