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Air Quality
Air Quality
26
Science
7th Grade
01/24/2016

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Cards

Term
air pollution
Definition
The introduction of chemicals, particles, or organisms to
air that are harmful to living things and structures.
Term
air quality
Definition
The condition of air in terms of the amount of pollutants
it contains.
Term
atom
Definition
The basic building block of matter
Term
Balance
Definition
An instrument used by scientists to measure mass.
Term
[image]
Definition
Triple beam balance
Term
boiling point
Definition
The temperature at which a liquid changes to a gas.
Term
element
Definition
The simplest type of substance made of identical atoms.
Term
evaporation
Definition
A change from a liquid to a gas at a temperature that is lower than the boiling point.
Term
condensation
Definition
The process in which a gas cools to form a liquid.
Term
freezing point
Definition
The temperature at which a liquid turns into a solid.
Term
freezing
Definition
The process in which a liquid cools to form a solid.
Term
gas
Definition
Matter that has no definite shape
or volume. It takes the shape and volume of its container. The particles are far apart and move rapidly and randomly.
Term
heating
Definition
The transfer of thermal energy from a warmer substance
to a cooler one.
Term
liquid
Definition
Matter that has a definite volume
but not a definite shape. It takes the shape of its container. The particles remain close together and
slide past each other in a fluid motion.
Term
macroscopic
Definition
A word used to describe an observation that can be seen by the unaided eye.
Term
mass
Definition
The amount of “stuff” something contains.
Term
matter
Definition
Anything that has volume (takes up space) and has mass.
Term
melting point
Definition
The temperature at which a solid changes to a liquid.
Term
microscopic
Definition
A word to describe an observation that cannot be seen with
the unaided eye.
Term
molecule
Definition
A combination of two or more atoms.
Term
plasma
Definition
A state of matter that forms from gases at very high temperatures.
Term
pollutant
Definition
A substance that can make air, soil, or water harmful to organisms and structures.
Term
solid
Definition
Matter that has a definite shape and volume and an organized arrangement of particles that remain
very close together and vibrate slowly.
Term
temperature
Definition
A measure of the average speed of the particles of matter,
which changes as the particles move faster (warmer) or slower (colder).
Term
volume
Definition
A measure of how much space something takes up.
Term
states of matter
Definition
The form matter takes (solid, liquid, gas or plasma).
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