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Atomic Theory
Test Description: Atomic Theory
Instructions: Answer all questions to get your test result.
1) Democritus called tiny bits of matter
A
fire
B
compounds
C
atoms
D
molecules
2) Which of the following did Aristotle NOT say was a matter category
A
Earth
B
Water
C
Fire
D
Blood
3) Dalton's theory agreed with modern atomic theory, EXCEPT
A
Dalton said atoms combine in whole number ratios to form coumpounds, modern theory does not
B
Dalton said atoms could rearrange to form compounds, modern theory does not
C
Dalton said atoms could not be subdivided, modern theory does not
D
Dalton said all matter was made from atoms, modern theory does not
4) The isotope with 1 proton and 2 neutrons is called
A
trifecta
B
tritium
C
deuterium
D
protium
5) Oxygen has _____ protons
A
12
B
6
C
8
D
4
6) This scientist came up with the plum pudding model of the atom
A
Thomson
B
Millikan
C
Rutherford
D
Bohr
7) The plum pudding model suggested the atom was a solid mass of ________ matter, with bits of _________________particles mixed in here and there.
A
negative, positive
B
neutral, negative
C
positive, negative
D
dark, anitmatter
8) To calculate neutrons, you need to
A
subtract the atomic number from the mass number
B
add the nuetron number to the protons, but then subtract electrons
C
add the mass and prtons together
D
subtract the atomic mass from the atomic number
9) Rutherford discovered the
A
electron
B
neutron
C
nucleus
D
quark
10) Mendeleev devoloped
A
the law of conservation of mass
B
a better scale for measuring mass
C
the periodic table
D
modern atomic theory
11) Which law states that mass cannot be created or destroyed?
A
Law of Conservation of Mass
B
Law of Definite Proportions
C
Law of Multiple Proportions
D
Law of Multiple Proportions
12) This law states that compunds exist in the same proportion by mass, regardless of size or source.
A
Law of Multiple Proportions
B
Law of Thermodynamics
C
Law of Definite Proportions
D
Law of Conservation of Mass
13) This law states that different compounds of the same two elements always combine in ratios of small whole numbers.
A
Law and Order
B
Law of Definite Proportions
C
Law of Conservation of Mass
D
Law of Multiple Proportions
14) Rutherford discovered the nucleus by shooting positive __________ particles through thin ______ foil.
A
alpha, aluminum
B
beta, gold
C
alpha, gold
D
beta, aluminum
*select an answer for all questions
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