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Stack #35740
6th grade matter vocab
Question | Answer |
---|---|
matter | the stuff that makes up everything in the universe |
characteristic property | a quality of a substance that never changes and can be used to identify the substance |
boiling point | the point at which a substance changes from a liquid to a gas |
melting point | the temperature at which a substanace changes from a solid to a liquid |
physical change | a change in a substance that does no change it's identity; for example a change of state |
chemical change | a change in which one or more a substances combine or breck apart to form new substances |
chemical activity | a characteristic property of a substance that indicates it's ability to undergo a specific chemical change |
mixture | two or more substances that are mixed togeather, but not chemically combined |
solution | a very 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 physical means |
element | a substance that cannot be broken down into other substances by chemical or physical means |
compound | a substance made of two or more elements chemically combined |
weight | a measure of the force of gravity on an object |
mass | a measurement of how much matter is in an object |
international system of units (SI) | the system of units used by scientists to measure the properties of matter. (also IU) |
volume | the amount of space that matter occupies l x w x h = v |
density | the measurement how much mass of a substance is contained in a given volume d = m/v |
atom | the smallest particle of an element |
molecule | a combination of two or more atoms |
chemical bond | the force that holds two atoms together |