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15 Cards in this Set

  • Front
  • Back
the study of compostition, structure, and properties of matter, the processes that matter undergoes, and the energy changes that accompany these processes
measure of the amount of matter
anything that has mass and takes up space

smallest unit of an element that maintains the chemical identity of that element

pure substnce that cannot be broke down into simpler, stable substances and is made of only one type of atom
substance that can be broken down into simple stable substances. Each compound is made from te atoms of two or more elements that are chemically bonded
Physical Property

Chemical Property
characterisic that can be observed or measured without changing the identity of the substance

relates a substance's ability to undergo changes that transform it into different substances
Physical Change

Chemical Change
change in substance that does not involve a change n the identity of the substance

one or more substances are converted into different substances
States of Matter
solid- definite volume and shape

liquid- definite volume but idefinite shape

gas- neither definite volume or shape

plasma- high-temperature physical state of matter in which atoms lose most of their electrons, particles that make up atoms
Extensive Properties
depend on the amount of matter that is present
--volume, mass
Intensive Properties
don not depend on the amount of matter present
--melting point, boiling point, density, ability to conduct electricity
substances that react in a chemical change
substances that are formed by the chemical change

Pure Substance
blend of two or more kinds of matter, each of which retains its own identity and properties

fixed composition
--every sample has exactly the same properties
--every sample has exactly same composition

vertical columns of periodic table

horizantal rows of elements in periodic table

uniform in composition

not uniform throughout