Quiz. 9-19 Flashcards
0
Q
Aristotle
A
Earth wind fires and water
1
Q
Democritus
A
Believed everything was composed of atoms
2
Q
Dalton
A
1800
3
Q
Law of multiple proportions
A
Two or more different compounds are composed of the same two elements
4
Q
Thomson
A
Cathode ray tube, electrons
5
Q
Rutherford
A
Gold foil experiment
- Empty space
- nucleus
6
Q
Subatomic particles
A
Proton
Neutron
Electron
7
Q
Atom
A
Smallest particles of an element
8
Q
Atomic number
A
Number of protons
9
Q
Mass number
A
total number or protons and neutrons
10
Q
Isotopes
A
Same element different mass numbers
