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Flashcards in More Stuff About People Deck (25)
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1

Suggested that matter is made up of atoms

Dalton

2

Proposed that atoms contain negatively harmed particles called electrons

Thomson

3

Discovered the nucleus and its subatomic particles.

Rutherford

4

Suggested that the nucleus was made up of positively charged particles called Protons and particles with no charge called neutrons

Rutherford

5

Proposed that electrons are located in shells around the nucleus

Bohr

6

Subatomic particles

All atoms are made up of 3 subatomic particles: protons, neutrons, electrons

7

Proton charge

Positive

8

Neutron charge

Neutral

9

Electron charge

Negative

10

What forms the nucleus?

Protons AND neutrons cluster together to down the nucleus of an atom

11

Suggested atoms cannot be created, destroyed, or divided into smaller particles

Dalton

12

Suggested electrons occupy specific energy levels or shells

Bohr

13

Suggested most of the mass of the atom is in the tiny, sense, positively barged nucleus

Thomson

14

Suggested most of the atom is empty space

Rutherford

15

Suggested all matter is made of small particles called atoms

Dalton

16

Suggested all atoms of the same element are identical

Dalton

17

Suggested atoms contain negatively charged particles

Thomson

18

Suggested that the nucleus contains positively charged particles called protons and particles with no electrical charge called neutrons

Rutherford

19

Suggested different elements combined together forms compounds

Dalton

20

Suggested electrons move around a central nucleus

Rutherford

21

Discovered he nucleus

Rutherford

22

Suggested that all matter is made of atoms

Dalton

23

Proposed the "raisin bun" model of the atom

Thomson

24

Observed streaks of negatively charged particles in gas discharge tubes

Thomson

25

Proposed that electrons exist in energy levels

Bohr