CHM1025C - Ch 4 Scientist Flashcards

1

architect of the modern periodic table

2

Formalized a theory of atoms

3

left blank spaces for elements that had not been discovered

4

arranged elements in the order of increasing atomic number

5

arranged elements with similar properties were grouped together in same row or column

6

gold foil experiment

7

Discovered the electron

8

used a cathode ray tube

9

arranged elements in the order of increasing atomic mass

10

thought that matter was composed of small individible particles, "atomos" or atoms

11

discovered the atomic nucleus

12

Developed the plum pudding model

CHM1025C - Ch 4 Scientist