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CRChem1Ch1Vocab
Chemistry Chapter 1 Vocabulary
Question | Answer |
---|---|
the study of the composition, structure, and properties of matter and the changes it undergoes | chemistry |
any substance that has a definite composition | chemical |
measure of the amount of matter | mass |
anything that has mass and takes up space | matter |
smallest unit of an element that maintains all the properties of that element | atom |
pure substance made up of only one kind of atom | element |
substance made from atoms of two or more elements that are chemically bonded | compound |
depends on the amount of matter that is present | extensive property |
does not depend on the amount of matter that is present | intensive property |
characteristic that can be observed or measured without changing the identity of the substance | physical property |
change in a substance that does not involve a change in the identity of the substance | physical change |
physical change of a substance from one state to another | change of state |
matter that has a definite shape and definite volume | solid |
matter that has a definite volumbe but no definite shape | liquid |
matter that has neither definite shape nor volume | gas |
high temperature state of matter in which atoms lose their electrons | plasma |
relates to a substance's ability to undergo changes that transform it into different substances | chemical property |
change in which one or more substances are converted into different substances | chemical change OR chemical reaction |
substances that react in a chemical change | reactants |
substances that are formed by the chemical change | products |
blend of two or more kinds of matter in which each retains its own identity and properties | mixture |
mixture that has uniform composition | homogeneous |
another name for a homogeneous mixture | solution |
mixtures that are not uniform throughout | heterogeneous |
has a fixed composition; all samples have the same characteristic properties AND have the same composition | pure substance |
vertical columns of the periodic table | groups OR families |
horizontal rows of elements in the periodic table | periods |
element that is a good conductor of heat and electricity | metal |
element that is a poor conductor of heat and electricity | nonmetal |
element that has some characteristics of metals and some characteristics of nonmetals | metalloid |