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chap 1 vocab

QuestionAnswer
chemical any substance that has a definite composition
chemistry the study of the composition, structure, and properties of matter and the changes it undergoes
atom the smallest unit of an element that maintains the properties of that element
change of state a physical change of a substance from one state to another
chemical change a change in which one or more substance are converted into different substances
chemical property the ability of a substance to undergo a change that transforms it into a different substance
chemical reaction a reaction in which two or more substances combine to form a new compound
compound a substance that is made from the atoms of two or more elements that are chemically bonded
element a pure substance made of only one kind of atom
gas the state of matter in which a substancehas neither definite volume nor definite shape
liquid the state of matter in which the substance has a definite volume but an indefinite shape
mass a measure of the amount of matter
matter anything that has mass and takes up space
mixture a blend of two or more kinds of matter, each of which retains its own identity and properites
physical change a change in a substance that does not involve a change in the identity of the substance
physical property a characteristic that can be observed or measured without changing the identity of the substances
product a substance that is formed by a chemical change
pure substance a substance that has a fixed composition and differs from a in a mixture in that every sample of a given pure substance has exactly the same characteristic properties and composition
reactant a substance that reacts in a chemical change
solid the state of matter in which the substance has deinite volume and definite shape
family a vertical column of the periodic table
group a vertical column of the periodic table
metal an element that is a good conductor of heat and electricity
metalloid an element that has some characteristics of metals and some characteristics of nonmetals
nonmetal an element that is a poor conductor of heat and electricity
period a horizontal row of elements in the periodic table
Created by: CortneyRose
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