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Mill Creek M.S.

Mill Creek M.S. Science Slanczka 6th grade Chemistry 1-3

QuestionAnswer
matter anything that has mass and occupies space
characteristics properties a quality of a substance that never changes and can be used to identify the substance
boiling point the tempreture at which a substance changes from liquid to gas
physical change a change in a substance that does not change its idenity;i.e:a change of state chemical change : a change in which one or more substances combine or break apart to form new substances
chemical change a change in which one or more substances combine or break apart to form new substances
chemical activity a charecteristic property of a substance that indicates its ability to undergo a specific chemical change
mixture two or more substances that are mixed together but not chemiclly combined
solution a well mixed mixture
pure substance a substance made of only one kind of matter and having definite properties
element a substance that cannot be broken down into other substances by chemical or physcial
compound a substance made of two or more elements chemically combined
mass a measure of how much matter is in and object
weight a measure of the force of gravity on an object
volume the amount of space that matter occupies
density the measurement of how much mass of a substance is contained in a given volume
international system of units : (SI) the system of units used by scientist to measure the properties of matter
atom the smallest particle of an element
chemical bond the force that holds two atoms together
molecule a combination of 2 or more atoms
solid a state of matter that has a definite volume and a definite shape
liquid a state of matter that has no deffinite shape but has a definite volume
gas a state of matter that has no deffinte shape or volume
thermal energy the total energy of a substance's particles due to their movement or vibration
chemical energy a form of energy that comes from chemical bonds
law of conservation of matter the principle that the total amount of energy remains the same during physical or chemical change
melting the change of state from a solid to a liquid
freezing the change in state from a liquid to a solid
vaporization the cahnge of state from a liquid to a gas
evaporation the process that occurs when vaporaztion takes place only on the surface of a liquid
boiling the process that occurs when vaporazation takes place inside a liquid as well as on the surface
condensation the change of state from a gas to a liquid
chemical reaction a process in which substances undergo chemical changes, forming new substances with differnt properties
Created by: cbolthouse
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