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26 Cards in this Set
- Front
- Back
The amount of 3-D space an object occupies, all matter has it
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Volume
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Measure of the amount of matter/use a balance
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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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Smallest unit of an element
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Atom
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Pure substance made of only one kind of atom
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Element
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Substance made from atoms of 2 or more elements chemically bonded together
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Compound
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Smallest unit of an element or compound that retains all of the properties
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Molecule
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Depend on the amount of matter present/ex.volume, mass and amount of energy
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Extensive properties
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Does not depend on the amount of matter present/ex. melting point, boiling point, density, conducting electricity and heat
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Intensive properties
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Characteristic that can be observed or measured without changing the substances identity/ ex. melting point, and boiling point
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Physical property
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Change in substances that does not involve changing the identity of the substance, ex. grinding, cutting, melting, and boiling
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Physical change
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Physical change of a substance from one state to another, ex. solid, liquid, gas
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Change of state
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Has definite volume and definite shape
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Solid state
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Has definite volume but indefinite shape
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Liquid state
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Has no definite volume or shape
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Gas state
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High-temperature physical state in which atoms lose their electrons, ex. found in
fluorescent bulbs |
Plasma
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Substances ability to undergo changes that transforms into different substances
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Chemical property
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When one or more substances are converted into different substances
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Chemical change or reaction
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Substances that react in a reaction
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Reactants
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Substances that are formed in a reaction
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Products
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Energy can be absorbed or released but not created or destroyed
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Law of conservation of energy
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Same throughout, does not vary from sample to sample
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Pure substances
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Blend of 2 or more kinds of matter, each keeps its own identity and properties
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Mixture
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Uniform in composition
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Homogeneous
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Homogeneous mixtures
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Solutions
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Not uniform throughout, mixtures can be separated by, ex. filtration, vaporization, centrifuge and paper chromatography
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Heterogeneous
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