Unit 3:scientists

Question 1

Democritus

Answer 1

Believed matter was made up of atomos which are physically indivisible ,have space between them ,always in motion and are not all the same

Question 2

Antonie lavosier

Answer 2

Helped create the metric system
Law of conservation of mass
Theorized existence of silicon

Question 3

John Dalton

Answer 3

Solid sphere model
Atomic theory

Question 4

John Dalton’s atomic theory

Answer 4

Atoms are tiny indivisible particles
Atoms of the same element are the same
Atoms of different element are different
Atoms of different elements can be combined to form new substances

Question 5

Jj Thompson

Answer 5

Cathode ray tube experiment
Discovered electrons
Made the plum pudding model

Question 6

Robert milikan

Answer 6

Oil drop experiment
Discovered that electrons basically have no mass

Question 7

Earnest Rutherford

Answer 7

Gold foil experiment
Found out atoms have a positively charged nucleus
Most of the arom is empty space

Question 8

What was Rutherfordton model called

Answer 8

The nuclear model

Question 9

James Chadwick

Answer 9

Discovered neutrons

Question 10

Max planck

Answer 10

Discovered atoms absorb and release energy in quanta

Question 11

Niels bohr

Answer 11

Planetary model

Question 12

Luis de brogile

Answer 12

Proposed that electrons behave as waves(wave particle duality)

Question 13

Photon

Answer 13

Energy released as light