Atoms Lesson

coffee

light

oxygen

computer

Aristotle

Democritus

John Dalton

J.J. Thompson

Aristotle

Democritus

John Dalton

J.J. Thompson

Atoms are made up of tiny particles surrounded by empty space

Atoms are uniformly packed spheres of positive matter filled with negatively charged electrons

Atoms consist largely of empty space with a dense, positively charged nucleus

Electrons orbit the nucleus at fixed energies and distances

Atoms are made up of tiny particles surrounded by empty space

Atoms are uniformly packed spheres of positive matter filled with negatively charged electrons

Atoms consist largely of empty space with a dense, positively charged nucleus

Electrons orbit the nucleus at fixed energies and distances

Aristotle

Democritus

Niels Bohr

Werner Heisenberg

Atoms are made up of tiny particles surrounded by empty space

Atoms are uniformly packed spheres of positive matter filled with negatively charged electrons

Atoms consist largely of empty space with a dense, positively charged nucleus

Electrons orbit the nucleus at fixed energies and distances

Protons and electrons

Protons and neutrons

Neutrons and electrons

Protons, neutrons, and electrons

Proton

Neutron

Electron

None of the above

1

2

6

8

Carbon

Helium

Neon

Oxygen

Atoms with fewer than 8 electrons in their outermost shells are stable

Atoms with 8 electrons in their outermost shells are stable

Atoms with more than 8 electrons in their outermost shells are stable

Atoms with 8 protons in their nucleus are stable

A

B

C

D

A

B

C

D

proton

neutron

electron

photon

proton; +1

neutron; -1

neutron; 0

electron; -1

proton, nucleus

neutron, electron cloud

neutron, nucleus

electron, electron cloud

proton, neutron

electron, neutron

proton, electron

2

4

6

19

9

1

3

4

7

2

4

6