Chapter 4 Flashcards
1
Q
Discovered the Nucleus
A
Rutherford
2
Q
The law of conservation of mass
A
Antoine Lavoisier
3
Q
Plum pudding model
A
JJ Thompson
4
Q
Positively charged atom
A
Cation
5
Q
Developed the Atomic Theory
A
John Dalton
6
Q
Planetary model
A
Neils Bohr
7
Q
Found the electron using cathode rays
A
JJ Thompson
8
Q
Wrote the law of definite proportions
A
Joseph Proust
9
Q
Empty space + nucleus model
A
Rutherford
10
Q
Used the word atomos
A
Democritus
11
Q
Discovered neutrons
A
Chadwick
12
Q
Believed that there are only 4 elements
A
Aristotle E
13
Q
The rays and particles that are emitted by a radioactive material
A
Radiation
14
Q
A reaction that involved a change in an atoms nucleus
A
Radioactive decay
15
Q
The process in which an unstable nucleus loses energy spontaneously
A
Nuclear reaction
