AFOQT (Physical Science) Exam Questions and Answers
VERIFIED
A chemical consisting of two or more elements chemically bonded
together. Example: calcium can combine with carbon and oxygen to make
calcium carbonate a compound of all three elements. - ANSWER
compound
The formation of a liquid from a gas. This is a change of state, also called
a
Phase change. - ANSWER condensation
The exchange of heat (heat conduction) by contact with another object, or
Allowing the flow of electrons (electrical conduction) - ANSWER
Conduction
The exchange of heat energy with the surroundings produced by the flow of
A fluid due to being heated or cooled. - ANSWER convection
The way that a radioactive element changes into another element due to
loss of was through radiation. Example: uranium 238 decays with the loss
of an alpha particle to form thorium 234. - ANSWER decay
The mass per unit volume - ANSWER density
The slow mixing of one substance with another until the two substances
are evenly mixed. Mixing occurs because of differences in concentration
within the mixture. _______ works rapidly with gases, very slowly with
liquids. - ANSWER diffusion
To break down a substance in a solution without causing a reaction
-
ANSWER dissolve
, The energy produced by an electrochemical cell and measured by the
Voltage or electromotive force. - ANSWER electrical potential
A tiny, negatively charged particle that is part of an atom. The flow of
electrons through a solid material such as a wire produces an electric
current. - ANSWER electron
A substance that cannot be decomposed into simpler substance by
chemical means. Examples: calcium, iron, gold - ANSWER element
A substance which when a shock is applied to it, decomposes very rapidly,
Releasing a very large amount of heat and creating a large volume of gases
As a shock wave. - ANSWER explosive
Able to flow either liquid or a gas - ANSWER fluid
The temperature at which a substance undergoes a phase change from
a
Liquid to a solid. It is the same temperature as the melting point.
-
ANSWER freezing point.
Waves of radiation produced as a nucleus of a radioactive element
Rearranges itself into a tighter cluster of protons and neutrons.
_______________ carry enough energy to damage living cells. -
ANSWER gamma rays
A form of matter in which the molecules form no definite shape, and are
free to move about to uniformly fill any vessel they are put in. A gas can
easily be compressed into a much smaller volume. - ANSWER gas
A vertical column in the periodic table there are eight groups in the table.
Their numbers correspond to the number of electrons in the outer shell of
VERIFIED
A chemical consisting of two or more elements chemically bonded
together. Example: calcium can combine with carbon and oxygen to make
calcium carbonate a compound of all three elements. - ANSWER
compound
The formation of a liquid from a gas. This is a change of state, also called
a
Phase change. - ANSWER condensation
The exchange of heat (heat conduction) by contact with another object, or
Allowing the flow of electrons (electrical conduction) - ANSWER
Conduction
The exchange of heat energy with the surroundings produced by the flow of
A fluid due to being heated or cooled. - ANSWER convection
The way that a radioactive element changes into another element due to
loss of was through radiation. Example: uranium 238 decays with the loss
of an alpha particle to form thorium 234. - ANSWER decay
The mass per unit volume - ANSWER density
The slow mixing of one substance with another until the two substances
are evenly mixed. Mixing occurs because of differences in concentration
within the mixture. _______ works rapidly with gases, very slowly with
liquids. - ANSWER diffusion
To break down a substance in a solution without causing a reaction
-
ANSWER dissolve
, The energy produced by an electrochemical cell and measured by the
Voltage or electromotive force. - ANSWER electrical potential
A tiny, negatively charged particle that is part of an atom. The flow of
electrons through a solid material such as a wire produces an electric
current. - ANSWER electron
A substance that cannot be decomposed into simpler substance by
chemical means. Examples: calcium, iron, gold - ANSWER element
A substance which when a shock is applied to it, decomposes very rapidly,
Releasing a very large amount of heat and creating a large volume of gases
As a shock wave. - ANSWER explosive
Able to flow either liquid or a gas - ANSWER fluid
The temperature at which a substance undergoes a phase change from
a
Liquid to a solid. It is the same temperature as the melting point.
-
ANSWER freezing point.
Waves of radiation produced as a nucleus of a radioactive element
Rearranges itself into a tighter cluster of protons and neutrons.
_______________ carry enough energy to damage living cells. -
ANSWER gamma rays
A form of matter in which the molecules form no definite shape, and are
free to move about to uniformly fill any vessel they are put in. A gas can
easily be compressed into a much smaller volume. - ANSWER gas
A vertical column in the periodic table there are eight groups in the table.
Their numbers correspond to the number of electrons in the outer shell of
