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Chemistry Vocab Ch.1
Question | Answer |
---|---|
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 |
pure substance made of only one kind on atom | element |
substance that is made from the atoms of two or more elements a that are chemically bonded | compound |
properties that do not depend on the amount of matter present | intensive |
properties that depend on the amount of matter that is present | extensive |
characteristic that can be measured without changing the identity of the substance | physical property |
relates to a substance's ability to undergo changes that transform it into different substances | chemical property |
change in a substance that does not involve a change in the identity of a substance | physical change |
matter in this state has definite volume and definite shape | solid |
matter has a definite volume but indefinite shape | liquid |
has neither definite volume nor definite shape | gas |
high temperature physical state of matter in which atoms loose their electrons | plasma |
the substance that reacts in a chemical change | reactant |
substance formed by a chemical change | product |
has a fixed composition and differs from a mixture in that every sample has the same characteristic properties and composition | pure substance |
blend of two or more kinds of matter, each of which retains its own identity and properties | mixture |
uniform in composition | homozygous |
not uniform throughout | heterozygous |
vertical columns of the periodic table | group or family |
horizontal rows of elements in the periodic table | period |
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 of nonmetals | metalloid |
chemical change | a change in which one or more substances combine or break apart to form new substances |
study of the properties and changes of matter and their relation to energy | physics |