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Related Flashcards
Cards In This Set
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Matter
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Anything that has mass and takes up space
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Model
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An explanation or representation of something that cannot be seen
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Element
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A collection of atoms that all have the same number of protons
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Molecules
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Chemicals that result from atoms linking together
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Physical change
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A change that affects the appearance but not the chemical makeup of the elements or molecules of a substance
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Chemical change
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A change that alters the makeup of the elements or molecules of a substance
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Phase
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One of three forms - solid, liquid, or gas - which every substance is capable of attaining
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Diffusion
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The random motion of molecules from an area of high concentration to an area of low concentration
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Concentration
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A measurement of how much solute exists within a certain volume of solvent
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Semipermeable membrane
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A membrane that allows some molecules to pass through but does not allow other molecules to pass through
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Osmosis
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The tendency of a solvent to travel across a semipermeable membrane into areas of higher solute concentration
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Catalyst
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A substance that alters the speed of a chemical reaction but is not used up in the process
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Organic molecule
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A molecule that contains only carbon and any of the following: hydrogen, oxygen, nitrogen, sulfur, and/or phosphorus
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Biosynthesis
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The process by which living organisms produce larger molecules from smaller ones
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Isomers
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Two different molecules that have the same chemical formula
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