WorksheetsNuclear Changes
Total questions: 32
Worksheet time: 17mins
Name
Class
Date
1.
The basic unit of matter is the
a)
atom
b)
molecule
c)
mole
d)
liter
2.
Negatively charged particles found outside of the nucleus are called
a)
electron
b)
protons
c)
neutrons
d)
nucleons
3.
Positively charged particles found in the nucleus of an atom are called
a)
protons
b)
neutrons
c)
electrons
d)
isotopes
4.
Particles found in the nucleus that have no charge, or are neutral, are called
a)
protons
b)
electrons
c)
neutrons
d)
Petriks
5.
An atom's _________ is its number of protons.
a)
atomic number
b)
mass number
c)
weight number
d)
football number
6.
Atomic numbers are specific to a particular
a)
element
b)
compound
c)
isotope
d)
student
7.
When a chemical reaction occurs, a new _______ can be created, but never a new _______.
a)
compound, element
b)
element, compound
c)
isotope, ion
d)
cookie, cake
8.
The disintegration of an unstable nucleus into one or more different nuclides is called
a)
radioactive decay
b)
nuclear radiation
c)
chemical reaction
d)
ionization
9.
Particles that are released from the nucleus during radioactive decay are collectively termed
a)
nuclear radiation
b)
UV radiation
c)
radio waves
d)
stadium waves
10.
Positively charged particles that consist of two protons and two neutrons are called
a)
alpha particles
b)
beta particles
c)
gamma rays
d)
neutron emissions
11.
The high-energy photon emitted from a nucleus during fission and radioactive decay is called a
a)
alpha particle
b)
beta particle
c)
gamma ray
d)
neutron emission
12.
The uncharged matter that is emitted from an unstable nucleus is called
a)
gamma radiation
b)
alpha particle
c)
beta particle
d)
neutron emission
13.
An electron that is emitted during radioactive decay is a
a)
neutron
b)
gamma ray
c)
alpha particle
d)
beta particle
14.
Which type of radioactive decay only releases energy?
a)
gamma decay
b)
alpha decay
c)
beta decay
15.
When a radioactive sample goes through alpha decay, how much mass does it lose per alpha particle?
a)
1 amu
b)
2 amu
c)
3 amu
d)
4 amu
16.
Which is NOT an element that Marie Curie discovered?
a)
polonium
b)
radium
c)
bismuth
17.
The Manhattan Project led to the creation of
a)
nuclear weapons
b)
life-saving cancer treatments
c)
smaller, faster computers
d)
nature reserves
18.
The force that causes protons and neutrons in the nucleus to attract to one another is the
a)
strong nuclear force
b)
electric repulsion
c)
gravity
d)
weak force
19.
The goal in chemistry is always to become more
a)
stable
b)
friendly
c)
intelligent
d)
arrogant
20.
The process of splitting heavier nuclei into lighter nuclei is called
a)
nuclear fission
b)
nuclear fusion
c)
radiation poisoning
d)
chemotherapy
21.
A continuous series of nuclear fission reactions is a
a)
chain reaction
b)
chemical reaction
c)
fusion reaction
d)
alpha reaction
22.
The process in which lighter nuclei combine at extremely high temps and pressure, forming heavy nuclei and releasing energy is
a)
fission
b)
fusion
c)
decay
d)
the scientific method
23.
Which is currently used today to produce electricity?
a)
fission
b)
fusion
24.
The nuclear radiation that arises naturally from cosmic rays and radioactive isotopes in the air and soil is
a)
background radiation
b)
excess radiation
c)
noisy radiation
d)
radiation poisoning
25.
If you start with 100 grams of iodine-131 and the half life is 2 days, how many grams is left after 6 days?
a)
25
b)
12.5
c)
50
d)
200
26.
A Geiger Counter, Bubble chamber, Cloud chamber, and Electroscope
a)
Determine atoms
b)
measure distances
c)
measure radioactivity
d)
stop radioactivity
27.
In nuclear decay, _____ particles are the least penetrating.
a)
alpha
b)
beta
c)
gamma
d)
fusion
28.
most damaging nuclear decay to the human body
a)
alpha
b)
beta
c)
gamma
d)
neutron
29.
nuclear decay that can be stopped by skin or paper
a)
gamma
b)
neutron
c)
beta
d)
alpha
30.
What was one of the draw backs of Marie Curie's work?
a)
She missed out on valuable family time
b)
She died from leukemia caused by her long term exposure to radiation
c)
She was limited in diet and wasn't able to eat chicken
31.
How many protons does U 235 atom have ?
a)
235
b)
92
c)
143
d)
67
32.
Which type of nuclear radiation is being emitted here?
a)
Alpha
b)
beta
c)
gamma
d)
none
100 %
