Cams 1.1 note flash cards
1
Q
Democritus
A
hypothesize that matter is made up of particles called atoms.
rejected the idea of the 4 elements
2
Q
alchemists
A
elixir of life
philosophers stone
Created lab glass wear and safe chemical handling
3
Q
john dalton
A
Basic particle theory
matter is made up of atoms
atoms are identical in size and mass.
4
Q
Dimtri mendeleev
A
invented modern periodic table
organized it by atomic number.
5
Q
J.J tompson
A
raisin bun model
discovered electrons
proposed electrons were in the nucleus
6
Q
Ernest Rutherford
A
gold foil experiment
proposed that the nucleus contains protons in it
7
Q
James Chadwick
A
discovered neutron
8
Q
Niels Bohr
A
study hydrogen gas
proposed electrons orbit the neucleus
9
Q
heisenberg
A
quantum model.
