NEW
Font size
S
M
L
XL
WorksheetsChapter 3 Atoms; Test Review
Total questions: 18
Worksheet time: 26mins
Name
Class
Date
1.
How many grams are in 4.0 moles of Lithium? Round your answer to correct sig figs.
a)
27.76 g
b)
27 g
c)
27.8 g
d)
28 g
2.
A neutral subatomic particle contained in the nucleus.
a)
proton
b)
neutron
c)
electron
d)
positron
3.
A positive subatomic particle found in the nucleus
a)
proton
b)
neutron
c)
electron
d)
positron
4.
What is the mass number?
a)
The average atomic mass
b)
the number of protons and neutrons in the nucleus
c)
the number of protons in the nucleus
d)
the number of protons and electrons in the nucleus
5.
The mass of one mole of a substance.
a)
atomic mass
b)
molar mass
c)
Avagadro's mass
6.
What is the average atomic mass?
a)
The weighted average of all the naturally occurring isotopes.
b)
the same as the mass number
c)
the number of protons and neutrons in the nucleus
d)
the mass of all the electrons in an atom
7.
The number of particles are in one mole of a substance?
a)
mole number
b)
mass number
c)
molar mass
d)
Avagadro's number
8.
A negative subatomic particle
a)
proton
b)
neutron
c)
electron
d)
positron
9.
How many atoms are in 2.0 moles of oxygen? Round to correct sig figs.
a)
1.2 x 1024
b)
1.2 x 10-24
c)
3.3 x 10-24
d)
3.3 x 1024
10.
How many neutrons does 68Zn have
a)
68
b)
38
c)
102
d)
98
11.
An isotope of Carbon has 7 neutrons, what is its mass number?
a)
7
b)
6
c)
13
d)
1
12.
A concept in dalton's atomic theory that is no longer considered true.
a)
atoms are the smallest particle
b)
atoms combine in simple whole number ratios
c)
atoms are made up of protons, neutrons and electrons
13.
How many moles in 2.64 grams of Beryllium? Round to correct sig figs.
a)
0.293 mol
b)
23.8 mol
c)
3.41 mol
d)
6.37 mol
14.
Discovered the electron with the cathode ray tube experiment.
a)
John Dalton
b)
J.J. Thomson
c)
E Rutherford
d)
Neils Bohr
15.
If 8 grams of A combine with 10 grams of B, how many grams of AB would be formed? (according to the Law of Conservation of Mass and the equation: A + B --> AB
a)
2
b)
80
c)
18
d)
0
16.
How many protons in Neon - 22?
a)
22
b)
10
c)
12
d)
32
17.
Most of the mass of an atom is contained in the ____?
a)
nucleus
b)
electron cloud
18.
Most of the volume of an atom is contained in the ____?
a)
nucleus
b)
electron cloud
Reset
