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Matter - Properties and Changes
vocabulary
24
Science
8th Grade
10/14/2010

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Term
Matter
Definition
anything that takes up space and has mass
Term
Viscosity
Definition
liquid's resistance to flow
Term
Pressure
Definition
the amount of force applied per unit of area
Term
Density
Definition
amount of mass in a given volume
Term
State of matter
Definition
physcial property that describes matter as a solid, liquid, or gas
Term
Size-dependent property
Definition
physical property that change when the size of an object changes
Term
Acids
Definition
has sour taste and a pH level of 0 to 7
Term
Chemical Property
Definition
characteristic of matter that allows it to change to a different type of matter
Term
Reactivity
Definition
how easily one thing reacts with something else
Term
Salts
Definition
compounds made of a metal and non-metal that are formed when acids and bases react
Term
Physical change
Definition
any change in size, shape, form, or state where the identity of the matter stays the same
Term
Chemical change
Definition
occurs when one type of matter changes into a different type of matter with different properties
Term
Mass
Definition
the amount of matter that an object contains
Term
Volume
Definition
the amount of space taken up by a give mass
Term
Solid
Definition
definite shape and volume
Term
liquid
Definition
definite volume but no definite shape
Term
Gas
Definition
does not have a definite shape or volume
Term
Thermal energy
Definition
total kinetic and potential energy of all the particles in a sample of matter
Term
Vaporization
Definition
change from liquid to gas state
Term
Condensation
Definition
change from gas to liquid (opposite of vaporization)
Term
Sublimation
Definition
change from solid to gas state
Term
Plasma
Definition
electrically charged particle
Term
Freezing point
Definition
temperature at which a substance changes from liquid to solid state
Term
boiling point
Definition
temperature at which a substance changes from liquid to gas (occurs below the surface)
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