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WorksheetsAtomic Structure Review
Total questions: 14
Worksheet time: 9mins
Name
Class
Date
1.
What is the basic unit of matter?
a)
Atoms
b)
Molecules
c)
Cells
d)
Minerals
2.
What is the mass number of the element pictured?
a)
7
b)
9
c)
16
d)
25
3.
What is the atomic number of the element pictured?
a)
7
b)
9
c)
16
d)
25
4.
Dalton proposed that atoms are
a)
indivisible particles
b)
like plum pudding
c)
like a solar system
d)
imaginary
5.
Deflections of the beam in a cathode ray tube demonstrated that all atoms contained
a)
a dense positive nucleus
b)
negatively charged electrons
c)
neutral particles called neutrons
d)
photons of light
6.
The gold foil experiment by Rutherford demonstrated that atoms contain
a)
a dense positive nucleus
b)
negatively charged electrons
c)
neutral particles called neutrons
d)
photons of light
7.
The element bromine contains 80 protons and 80 electrons
a)
TRUE
b)
FALSE
8.
According to the isotope notation shown below, how many neutrons does lithium have?
a)
3
b)
4
c)
7
d)
10
9.
Where is most of the mass of an atom found?
a)
central nucleus
b)
quarks
c)
electron cloud
d)
neutrons only
10.
Calculate the average atomic mass of an element using the data table below
a)
35.45 amu
b)
35.426 amu
c)
35.5 amu
d)
35.4215 amu
11.
How many protons, neutrons, and electrons are in 59Ni+2?
a)
59p+, 59n0, 61e-
b)
26p+, 31n0, 30e-
c)
28p+, 31n0, 26e-
d)
28p+, 59n0, 31e-
12.
Who performed early chemistry experiments in attempt to turn metals into gold?
a)
doctors
b)
miners
c)
alchemists
d)
aristocrats
13.
How many protons, neutrons, and electrons are present in 72As3-?
a)
72p+ , 72n , 69e-
b)
33p+ , 30n , 33e-
c)
33p+ , 39n , 36e -
d)
33p+ , 39n , 30e-
14.
Use the mass spectrum below to calculate the average atomic mass of Boron
a)
10.81 amu
b)
10.199 amu
c)
10.8 amu
d)
10.5 amu
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