LESSON 3: ATOMS

Question 1

FRENCH CHEMIST, experimented with MERCURY in a jar

Answer 1

Antoine Laurent Lavoisier

Question 2

“Matter is neither created nor destroyed, but it is transformed from one form to another.”

Answer 2

LAW OF CONSERVATION OF MASS
Antoine Laurent Lavoisier

Question 3

When matter reacts with another matter, the sum of the masses of the resulting products would ___________ as the initial total mass of the unreacted matter.

Answer 3

always be the same
LAW OF CONSERVATION OF MASS

Question 4

Antoine Laurent Lavoisier

Answer 4

LAW OF CONSERVATION OF MASS

Question 5

Joseph Proust

Answer 5

LAW OF DEFINITE PROPORTIONS

Question 6

Fellow chemist of Lavoisier, experimented with PYRITE (FeS2)

Answer 6

Joseph Proust

Question 7

“All compounds are made up of FIXED PROPORTIONS of elements in terms of mass”

Answer 7

LAW OF DEFINITE PROPORTIONS
Joseph Proust

Question 8

The proportions are ________ regardless of where the compound came from or how it was made

Answer 8

CONSTANT
LAW OF DEFINITE PROPORTIONS

Question 9

From the discovery of Proust, discovered that proportions of masses in a compound can be expressed in NUMERICAL RATIOS.

Answer 9

LAW OF MULTIPLE PROPORTIONS
John Dalton

Question 10

“The tendency among elements in a compound to form a ________________”

Answer 10

ratio of small whole numbers

Question 11

Solid Sphere Model
Dalton’s Atomic Theory

Answer 11

JOHN DALTON

Question 12

Plum pudding Model

Answer 12

JOHN JOSEPH THOMSON

Question 13

Nuclear Model

Answer 13

ERNEST RUTHERFORD

Question 14

ELECTRON

Answer 14

JOHN JOSEPH THOMSON

Question 15

PROTON

Answer 15

ERNEST RUTHERFORD

Question 16

NEUTRON

Answer 16

JAMES CHADWICK

Question 17

• Assigned orbits to electrons that correspond to their ENERGY LEVEL
• PLANETARY MODEL of the atom
• The farther the electron’s orbit is from the nucleus, the less energy would be needed to remove that electron and transfer it farther.

Answer 17

NIELS BOHR

Question 18

• He found out that electrons are MOVING, exact position cannot be pinpointed
• Electron CLOUD MODEL
• This is the ACCEPTED accurate depiction of atomic structure

Answer 18

ERWIN SCHRODINGER

Question 19

Represents the symbol of the element

Answer 19

ATOMIC SYMBOL

Question 20

Represents the number of proton an element

Answer 20

ATOMIC NUMBER

Question 21

Represents the sum of the masses of the atom’s protons and neutrons has

Answer 21

ATOMIC MASS

Question 22

It is a variant of an element but has MORE NEUTRONS than the element’s stable form.

Answer 22

ISOTOPES

Question 23

The atoms of an element’s isotope have _________, although extra neutron makes an isotope unstable.

Answer 23

greater
mass

Question 24

Number of protons is the ______ in all isotopes of a given element.

Answer 24

same

Question 25

32P

Answer 25

Cancer detection and treatment (esp. eyes and skin)

Question 26

59Fe

Answer 26

Anemia diagnosis

Question 27

60Co

Answer 27

Gamma ray irradiation of tumors

Question 28

99Tc

Answer 28

Brain, thyroid, bone marrow, lung, heart, and intestinal scanning; blood volume determination

Question 29

131I

Answer 29

Diagnosis and treatment of thyroid functions

Question 30

133Xe

Answer 30

Lung imaging

Question 31

198Au

Answer 31

Liver disease diagnosis