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WorksheetsCh.6 Atoms
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
the fundamental property of matter that may be identified as positive or negative is
a)
elementary charge
b)
electric charge
c)
magnetic force
d)
nuclear force
2.
a particle with a negative charge in an atom is called a(n)
a)
neutron
b)
electron
c)
proton
d)
energy level
3.
electrons are held in place by
a)
strong nuclear force
b)
magnetic energy
c)
electromagnetic force
d)
gravitational force
4.
the nucleus of an atom that spontaneously breaks up to emit particles or energy may be called
a)
stable
b)
radioactive
c)
static electricity
d)
nonradioactive
5.
the tiny core of an atom containing the most mass of the atom is the
a)
enery level
b)
nucleus
c)
proton
d)
neutron
6.
a buildup of either positive or negative charge is known as
a)
static electricity
b)
electric charge
c)
nuclear force
d)
decay
7.
the atomic number is also the number of
a)
protons
b)
electrons
c)
neutrons
d)
protons + neutrons
8.
electrons have a mass of about
a)
1amu
b)
0amu
c)
+
d)
1,836amu
9.
amu stands for
a)
grams
b)
a mere unit
c)
a milliunit
d)
atomc mass unit
10.
strong force that overcomes the repulsion of protons and holds them together in the nucleus
a)
weak nuclear force
b)
strong nuclear force
c)
electromagnetic force
d)
gravitational force
11.
atoms having the same atomic number but different mass numbers are called
a)
isotopes
b)
ions
c)
charged
d)
neutral
12.
atoms of the same element (C-12, C-13) ALWAYS contain the same
a)
neutron number
b)
proton number
c)
electron number
d)
mass number
13.
radium-226 decays radioactively to become radon-222 by what process
a)
alpha decay
b)
beta decay
c)
gamma decay
d)
xray decay
14.
after alpha decay, the atomic number
a)
decreases by 1
b)
decreases by 2
c)
decreases by 4
d)
no change
15.
after alpha decay, the atomic mass
a)
decreases by 2
b)
no change
c)
decreases by 4
d)
increases by 1
16.
after beta decay, the atomic mass
a)
stays the same
b)
increases by 1
c)
decreases by 2
d)
decreases by 4
17.
after gamma decay, the atomic number
a)
stays the same
b)
increases by 1
c)
decreases by 4
d)
increases by 2
18.
the most deadly type of decay to living things is
a)
alpha decay
b)
beta decay
c)
xray decay
d)
gamma decay
19.
+ and - charges
a)
attract
b)
repel
20.
the first energy level can hold ___ electrons
a)
0
b)
2
c)
6
d)
8
21.
the overall area of the atom where all the electrons are located. Largest part of the atom.
a)
energy level
b)
nucleus
c)
electron cloud
d)
neutron
22.
Barium has a proton number of
a)
26
b)
4
c)
56
d)
55
23.
How many neutrons does Sulfur have?
a)
16
b)
17
c)
32
d)
33
24.
Iron-55 after beta decay will turn into
a)
Co-54
b)
Co-55
c)
Ni-54
d)
Ni-55
25.
in a __________ atom, the number of protons equal the number of electrons
a)
charged
b)
neutral
c)
negative
d)
ion
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