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25 Cards in this Set
- Front
- Back
the study of the composition, structure, and properties of matter, the processes that matter undergoes, and the energy changes that accompany these processes
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chemistry
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a measure of the amount of matter
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mass
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anything that has mass and takes up space
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matter
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the smallest unit of an element that maintains the chemical identity of that element
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atom
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a pure substance that cannot be broken down into simpler, stalbe substances and is made of one type of atom.
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element
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a substance that can be broken down into simple stable substances. each compound is made from the atoms of two or more elements that are chemically bonded
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compound
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depend on the amount of matter that is present
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extensive property
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do not depend on the amount of matter present
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intensive property
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a characteristic that can be observed or measured without changing the identity of the substance
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physical property
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a change in a substance that does not involve a change in the identity of the substance
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phsical change
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a physical change of a subtance from one state to another
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change of state
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matter that has a definite volume and definite shape
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solid
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matter that has a definite volume but an indefinite shape
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liquid
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matter that has neither definite volume nor definite shape
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gas
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high-temperature physical state of matter in which atoms lose most of their electrons, particles that make up atoms
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plasma
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relates to a substance's ability to undergo changes that transform it into different substances
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chemical property
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a change in which one or more substances are converted into different substances
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chemical change
chemical reaction |
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the substances that are formed by the chamical change
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products
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the substances that react in a chemical change
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reactant
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the vertical columns of the periodic table
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group or family
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the horizontal rows of elements in the periodic table
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period
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a logical approach to solving problems by observing and collecting data, formulating hypotheses, testing hypotheses and formulating theories that are supported by data
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scientific method
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testable statement
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hypothesis
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in science is more than a physical object; it is often and explantion of how phenomena occur and how data or events are related
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model
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a broad generalization that explains a body of facts or phenomena
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theory
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