Chapter 4: Name That Scientist

Question 1

Name that scientist;

fundamental particles- “atomos”

Answer 1

Democritus

Question 2

Name that scientist;

solid homogeneous indivisible & indestructible

Answer 2

Democritus

Question 3

Name that scientist;

atoms could not be broken down any further

Answer 3

Democritus & Dalton

Question 4

Name that scientist;

empty space can not exist

Answer 4

Aristotle

Question 5

Name that scientist;

matter is continuous

Answer 5

Aristotle

Question 6

Name that scientist; atoms are like a plate of mashed potatoes, you can make smaller and smaller portions to infinity

Answer 6

Arsitotle

Question 7

Name that scientist;

founder of modern chemistry

Answer 7

Robert Boyle

Question 8

Name that scientist;

performed quantitative tests

Answer 8

Robert Boyle

Question 9

Name that scientist;

worked with gases and explored relationships with pressure and volume

Answer 9

Robert Boyle

Question 10

Name that scientist;

discovered oxygen and its role in combustion

Answer 10

Joseph Priestley

Question 11

Name that scientist;

explained the process of combustion

Answer 11

Lavoisier

Question 12

Name that scientist;

started the concept of “conservation of mass”

Answer 12

Lavoisier

Question 13

Name that scientist;

who expanded on the “conservation of mass”

Answer 13

Dalton

Question 14

Name that scientist;

scientist that made first scientific based model of the atom

Answer 14

Dalton

Question 15

Name that scientist;

all elements are composed of tiny indivisible indestructible particles

Answer 15

Dalton & Democritus

Question 16

Name that scientist;
atoms of the same element are identical
(not actually true)

Answer 16

Dalton

Question 17

Name that scientist;

atoms of different elements can combine in whole number ratios in compounds (law of definite proportions)

Answer 17

Dalton

Question 18

Name that scientist;

chemical reactions occur when atoms rearrange

Answer 18

Dalton

Question 19

Name that scientist;

discovered electrons

Answer 19

JJ Thompson

Question 20

Name that scientist;

determined charge to mass ratio

Answer 20

JJ Thompson

Question 21

Name that scientist;

used cathode rays (emit electrons)

Answer 21

JJ Thompson

Question 22

Name that scientist;

identified the first subatomic particle electrons (negative charge)

Answer 22

JJ Thompson

Question 23

Name that scientist;

plum pudding model

Answer 23

JJ Thompson

Question 24

Name that scientist;
determined the actual charge of an electron:
-1.302 x 10^-19

Answer 24

Robert Millikan

Question 25

Name that scientist;

oil drop experiment

Answer 25

Robert Millikan

Question 26

Name that scientist;
lead to the determination of the mass of an electron is
9.1 x 10^-28 grams

Answer 26

Robert Millikan

Question 27

Name that scientist;

discovered nucleus and general structures of the atom

Answer 27

Ernest Rutherford

Question 28

Name that scientist;

famous gold foil experiment

Answer 28

Ernest Rutherford

Question 29

Name that scientist;
212 Po –> 4 He + 208 Pb
84 2 82
Polonium, Helium, Lead

Answer 29

Ernest Rutherford

Question 30

Name that scientist;
discovered a dense core (nucleus).
1 in 20 000 alpha particles deflected at more than a 90 degree angle

Answer 30

Ernest Rutherford

Question 31

Name that scientist;

empty space makes up the volume of the atom

Answer 31

Ernest Rutherford

Question 32

Name that scientist;

discovered the neutron

Answer 32

James Chadwick

Question 33

Name that scientist;

Subatomic particles that have no charge

Answer 33

James Chadwick

Question 34

Name that scientist;

developed an experiment using alpha particles, wax paper, and ejected protons

Answer 34

James Chadwick

Question 35

Name that scientist;

discovered that atoms of each element contain a positive charge

Answer 35

Henry Moseley