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