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Science Exam Cards

definitions/questions for the science exam (:

constant a factor that doesn't change
dependent variable the factor whose value changes because of a change in the independant variable
independent variable the fact or adjusted to a different value by the experimental to see what effect it will have on the dependent variable
hypothesis a testable predictionused to see how something works or to solve a problems
manipulated variable DV
responding variable IV
volume the amount of space occupied by an object
mass a measurementof the amount of matter in an object
length the distance between two points
control standard for comparison that is often needed to draw a meaningful conclusion
density the mass per unit volume of a material; describes how tightly packed a substance's molecules
metric conversions Kilo, Hecto, Deca, Unit, Centi, Deci, Milli
solid have a definite shape and volume
liquid definite volume but no definite shape
gas no definite volume or shape
plasma exsists only at very high temperature
condensation the change of a substance from a gas to a liquid, which usually takes place when a gas is cooled to or below its boiling point
evaporation (vaporization) the gradual change of a substance from a liquid to a gas
fusion solid to gas
solidification liquid to solid
ionization gas to plasma
recombination plasma to gas
thermal expansion almost all matter expands when heated and contracts when cooled
crystal repeating geometric patterns
kinetic theory of matter all matter is made up of tiny particles in constant motion
chemical change the change of substances to different substances
physical change a change in the size, shape, color, or state of matter
chemical properties a characteristic of a substance that indicates whether it can undergo a specific chemical change
physical properties any characteristic of a material that can be observed without changing the identity of the material itself
Created by: Carlyn Parr