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Question 0

Discovered the neutron:

Answer 0

Chadwick

Question 1

Gold foil experiment:

Answer 1

Rutherford

Question 2

Electron charge to mass ratio:

Answer 2

Millikan

Question 3

Four elements are water, air, earth, fire

Answer 3

Aristotle

Question 4

Atomic Theory postulate:

Answer 4

Dalton

Question 5

Oil drop experiment:

Answer 5

Millikan

Question 6

Dense, positively charged nucleus:

Answer 6

Rutherford

Question 7

Planetary orbit of electrons around the nucleus:

Answer 7

Bohr

Question 8

Cathode ray:

Answer 8

Beam of electrons traveling from the the negatively charged to positively charged

Question 9

Isotopes-

Answer 9

Atoms with same # of protons and electrons but different # of neutrons

Question 10

All isotopes are used to calculate:

Answer 10

Atomic mass

Question 11

An element can exist in a number of forms called ________

Answer 11

isotopes

Question 12

Isotopes are forms of the same atom that vary in?

Answer 12

mass

Question 13

To find the average atomic mass of an atom you use all the _______ that exist and percentage of each type

Answer 13

isotopes

Question 14

Average atomic mass =

Answer 14

(mass of isotope x relative abundance)

Question 15

The average of atomic mass should be close to the the form of isotope that is more?

Answer 15

abundant

Question 16

Atomic number-

Answer 16

of protons in the nucleus, also # of electrons

Question 17

Atomic mass-

Answer 17

of protons + # of neutrons

Question 18

What determines the ion?

Answer 18

electrons

Question 19

Relative masses-

Answer 19

Proton- 1
Neutron- 1
Electron- 0

Question 20

Cathode Ray tube experiment

Answer 20

thomson

Question 21

Positive ion:

Answer 21

cation

Question 22

negative ion-

Answer 22

anion