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Atomic Theory Test Review Flashcards | StudBud
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Atomic Theory Test Review
Atomic Theory Test Review
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1
What is the mass number of isotope Oxygen-18?
18
16
8
10
2
A neutral isotope has an atomic number 20 and mass number 50, so it must contain..
20 protons, 20 electrons, and 50 neutrons
20 protons, 0 electrons, and 30 neutrons
10 protons, 20 electrons, and 30 neutrons
20 protons, 20 electrons, and 30 neutrons
3
What is the mass number of Oxygen-16 if it has 8 protons, 8 electrons, and 8 neutrons?
18
15.999
16
8
4
Dalton's theory on atomic structure did not include
atoms
matter
chemical reactions
protons, electrons, and neutrons
5
This scientist's experiment described positively charged particles called alpha particles bouncing off a central object
Dalton
Rutherford
Bohr
Thompson
6
Isotopes have the same..
atomic number
mass
7
From the periodic table, what is the atomic mass of Oxygen?
15.999
8
16
8
In JJ Thompsons experiment with Cathode Rays, he noticed that electrons are deflected
towards the negative
toward the positive
towards neither positive nor negative
to both the positive and negative
9
An element has two isotopes, one with mass number 10 amu and percent abundance 75%, the other 12 amu and 25%.
The avarage atomic mass is 11
The average atomic mass is 9
The average atomic mass is 10.5
The average atomic mass is 10
10
Which of the folllowing cannot be found in the nucleus?
protons
all can be found in the nucleus
electrons
neutrons
11
How many neutrons are in isotope Oxygen-18?
16
8
9
10
12
Atom 1: 5 proton/5 neutrons, Atom 2: 5 protons/ 6 neutrons, Atom 3: 4 protons/ 4 neutrons, Atom 4: 6 protons/ 5 neutrons
Atoms 1 & 2 are isotopes
Atoms 2 and 3 are isotopes
Atom 1 and 3 are Isotopes
Atoms 1& 4 are isotopes
13
Order the atomic model's scientists from oldest to newest
Rutherford, Dalton, Bohr
Thompson, Bohr, Rutherford
Dalton, Rutherford, Schrodinger
Schrodinger, Bohr, Dalton
14
Which of the following can not be found directly from the periodic table?
number of protons
atomic number
mass number
atomic mass
15
Who discovered the nucleus of an atom in his famous gold foil experiment?
Rutherford
Thompson
Bohr
Dalton
16
Two atoms have the same number of protons, but one has 10 neutrons and the other has 15. What do we call these?
Free
Ions
Neutral
Isotopes
17
A ___ is a subatomic particle with about the same mass as a proton but no charge.
quark
electron
neutron
proton
18
From the periodic table, what is the atomic number of Oxygen?
16
15.999
8
19
An element has two isotopes, one with mass number 20 amu and percent abundance 70%, the other 22 amu and 30%.
The average atomic mass is 20.3
The avarage atomic mass is 20.5
The average atomic mass is 20.8
The average atomic mass is 20.6
20
A ___ is a subatomic particle with the opposite charge of a proton but very little mass.
proton
neutron
quark
electron
21
What is the atomic number of isotope Oxygen-18?
8
10
9
16
22
How many electrons are in a neutral atom of O \frac{17}{8}
9
16
8
17
23
Atom 1: 5 protons/ 6 neutrons, Atom 2: 5 proton/5 neutrons, Atom 3: 4 protons/ 4 neutrons, Atom 4: 6 protons/ 5 neutrons
Atoms 1 & 2 have the same mass
Atoms 1 & 4 have the same mass
Atom 1 and 3 have the same mass
Atoms 2 and 3 have the same mass
24
Select another way of writing O\frac{18}{8}
Oxygen
Oxygen 18
Oxygen 24
Oxygen 6
25
Protons are +1 charge and Electrons are -1 charge, In Oxygen
-2
Ion
How many Electrons
?
11
10
8
9
26
Which model does not match the scientist who theorized it?
Planetary Model / Bohr
Schrodinger/ Quantum Mechanical model
Plum Pudding (chocolate chip cookie) Model/ Thompson
Democrates/ Billiard ball
27
How many protons are in isotope Oxygen-18?
18
10
16
8
28
How many electrons are in isotope Oxygen-18?
18
16
10
8
