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APSM Biology M5

Apologia 2e

TermDefinition
Matter Anything that has mass and takes up space
Model An explanation or representation of something that cannot be seen.
Element A collections of atoms that all have the same number of protons
Molecules Chemicals that result from atoms linking together
Physical change affects the __________ of a substance appearance, but not the chemical makeup
Chemical change affects the __________ of a substance makeup of the elements or molecules
Diffusion The random motion of molecules from an area of high concentration to an area of low concentration
Concentration A measurement of how much solute exists within a certain amount of solovent
Semipermeable membrane A membrane that allows some molecules to pass through but does not allow other molecules pass through
Osmosis The tendency of a solvent to travel across a semipermeable membrane into areas of higher solute concentration
Catalyst A substance that alters the speed of a chemical reaction but is not used up in the process
Organic molecule A molecule that contains only carbon and any of the following: hydrogen, oxygen, nitrogen, sulfur, and/or phosphorous
Biosynthesis Two different molecules that have the same chemical formula
Monosaccharides Simple carbohydrates that contain 3 to 10 atoms
Disaccharides Carbohydrates that are made up of two monosaccharides
Polysaccharides Carbohydrates that are made up of more than two monosaccharides
Dehydration Reaction A chemical reaction in which molecules combine by moving water
Hydrolysis Breaking down complex molecules by the chemical addition of water
Hydrophobic Lacking any affinity to water
Saturated fat A lipid made from fatty acids that have no double bonds between carbon atoms
Unsaturated fat A lipid made from fatty acids that have at least one double bond between carbon atoms
Peptide bond A bond that links amino acids together in a protein
Hydrogen bond A strong attraction between hydrogen atoms and certain other atoms (usually oxygen or nitrogen) in specific molecules
Created by: samundoacademy
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