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ATOMIC THEORY Flashcards | StudBud
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ATOMIC THEORY
ATOMIC THEORY
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chemistry
Flashcards
26 cards
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Questions
26
Answers
1
What is the atomic number for Boron?
5
6
4
2
2
1 mole= _______________ of the element
molar mass
atoms
mole
3
Avogadro's Number is
6.023 x10^23
6.023x 10^26
8.0564x10^23
4
According to the mass of subatomic particles, proton is the most massive particle.
False
True
5
Which of the subatomic particles lacks a charge and was the last to be identified?
Electrons
Neutrons
Protons
6
1 mole can be written as
Both a and b
Molar mass (g)/1mole
1mole/molar mass (g)
none of the above
7
Determine the mass of 3.50 of Copper.
225 g Cu
222g Cu
223 g Cu
8
What is the mass in grams of 1.00 mol of Uranium?
238 mol
239 mol
238 g
9
Identify the model
Thomson
Rutherford
Dalton
Bohr
10
How many atoms are in 0.70 mol of Fe?
4.2 x 10^23 atoms
4.0 x 10^23 g/mol
4.2161 x10^23
4.2 g
11
Identify the model
Aristotle
Chadwick
Rutherford
Dalton
12
According to the mass of subatomic particles, electron is the least massive
True
False
13
How many moles of silver are represented by 2.888x10^23 atoms?
.4795g
.58g
.4795 mol
17.39 mol
14
Who discovered the evidence for a proton?
Rutherford
Dalton
Chadwick
Thomson
15
Who is the "Father of Atomic Theory"?
Democritus
Rutherford
Dalton
Bohr
16
Electron cloud model is proposed by
Rutherford
Schrodinger
Heisenberg
Bohr
17
1 mole =________________atoms
6.023x10^25
6.023x10^22
6.023x10^23
6.054 x10^24
18
What is unit of molar mass?
g
amu/g
g/mol
amu
19
Who first suggested that matter was made of tiny, indivisible particles?
Aristotle
Plato
Democritus
Leucippus
20
Determine the number of atoms in .30 mol of fluorine atoms.
1.89 x 10^24
1.8 x 10^23 atom
21
What is the molecular mass of CH4?
21g
20.15g
20.03 g
17g
22
Who discovered the evidence of neutrons?
Dalton
Rutherford
Chadwick
Democritus
23
Thomson's model is also called
Blueberry Muffin
Plum Pudding
Molecular Model
24
The atomic mass unit for Helium is
4.003g/mol
4.003 amu
25
Molar mass is equal to an elements atomic mass
.True
False
26
Who discovered the negative charged electron using a cathode ray tube?
Thomson
Chadwick
Dalton
Rutherford
