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WorksheetsUnit 4- Matter & Atoms Vocabulary Spring 2025
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
A change directly from the solid to the gaseous state without becoming liquid
a)
sublimation
b)
condensation
c)
deposition
d)
evaporation
2.
The phase change from a liquid to a solid.
a)
freezing
b)
sublimation
c)
melting
d)
condensation
3.
an isotope having an unstable nucleus that decomposes spontaneously by emission of nuclear radiation, thus achieving a stable nuclear composition.
a)
neutron
b)
atom
c)
ion
d)
radioactive isotope
4.
The change of state from a gas to a liquid
a)
sublimation
b)
deposition
c)
evaporation
d)
condensation
5.
Thermal energy that flows from a warmer material to a cooler material.
a)
freezing
b)
kinetic energy
c)
pressure
d)
heat
6.
an average of the mass of all isotopes of an element
a)
atomic mass
b)
mass number
c)
atomic number
d)
half life
7.
Mass per unit volume of a material.
a)
volume
b)
temperature
c)
mass
d)
density
8.
A phase that has a definite volume but takes the shape of its container.
a)
gas
b)
liquid
c)
plasma
d)
solid
9.
The smallest particle of an element that still retains the properties of the element.
a)
proton
b)
atom
c)
electron
d)
neutron
10.
Amount of space occupied by an object.
a)
density
b)
mass
c)
pressure
d)
volume
11.
phase change from gas to solid
a)
condensation
b)
deposition
c)
evaporation
d)
sublimation
12.
the process in which 2 light nuclei combine into a heavier nucleus and releases energy.
a)
alpha decay
b)
neutron
c)
fusion
d)
radiation
13.
A change from one state of matter (e.g. solid) to another state of matter (e.g. gas).
a)
temperature
b)
physical property
c)
phase change
d)
kinetic change
14.
the process in which an unstable nucleus changes by emitting particles or releasing energy.
a)
fission
b)
isotopes
c)
radioactivity
d)
radiation
15.
The phase change from a liquid to a gas.
a)
condensation
b)
deposition
c)
vaporization/boiling
d)
freezing
16.
the process in which a nucleus splits into 2 or more smaller fragments releasing neutrons and a lot of energy.
a)
beta decay
b)
fusion
c)
radiation
d)
fission
17.
Particles surrounding the nucleus of an atom that have a negative charge.
a)
proton
b)
electron
c)
atom
d)
neutron
18.
the time required for one-half of the atoms to undergo decay to isotopes of other atoms.
a)
mass number
b)
alpha decay
c)
half life
d)
electron cloud
19.
the particles or the energy that is released from the nucleus.
a)
radioactivity
b)
radiation
c)
gamma ray
d)
fission
20.
energy of motion
a)
thermal energy
b)
kinetic energy
c)
sound energy
d)
nuclear energy
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