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25 Cards in this Set
- Front
- Back
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Matter |
Anything that has mass and takes up space |
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Model |
Explanation of Representation of something that cannot be seen |
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Element |
Collection of atoms that have the same number of protons |
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Molecules |
Chemicals that result from atoms linking together |
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Physical change |
Change that affects the appearance but not the chemical makeup of a substance |
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Chemical change |
Change that alters the makeup of the elements or molecules of a substance |
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Phase |
One of three forms solid,liquid,or gas Which every substance is capable of attaining |
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Diffusion |
Random motion of molecules from an area of high concentration to an area of low concentration |
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Concentration |
Measurement of how much solute exists within a certain volume of solvent |
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Semipermeable membrane |
Membrane that allows some molecules to pass through but doesn't allow other molecules to pass through |
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Osmosis |
Tendency of a solvent to travel across a semipermeable membrane into areas of higher solute concentration |
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Catalyst |
Substance that alters the speed of a chemical reaction but is not used up in the process |
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Organic molecule |
Molecules that contain only carbon, hydrogen, oxygen, nitrogen, sulfer,and phosphorus |
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Biosynthesis |
Process by which living organisms produce larger molecules from smaller ones |
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Isomers |
2 different molecules that have the same chemical formula |
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Monosaccharides |
Simple carbohydrates that contain 3 to 10 carbon atoms |
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Disaccharides |
Carbohydrates that are made up of 2 monosaccharides |
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Polysaccharides |
Carbohydrates that are made up of more than 2 monosaccharides |
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Dehydration reaction |
Chemical reaction in which molecules combine by removing water |
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Hydrolysis |
Breaking down complex molecules by the chemical addition of water |
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Hydrophobic |
Lacking any affinity to water |
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Saturated fat |
A lipid made from fatty acids that have no double bonds between carbon atoms |
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Unsaturated fat |
A lipid made from fatty acids that have at least one double bond between carbon atoms |
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Peptide bond |
A bond that links amino acids together in a protein |
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Hydrogen bond |
A strong attraction between hydrogen atoms and certain other atoms in specific molecules |
