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CHAPTER 6 VOCAB

chapter 6 vocabulary

TermDefinition
acid any substance that forms hydrogen ios (H+) in water and has a pH below 7
atom smallest particle of an element that has the characteristics of that element ; basic building block of all matter
base any substance that forms hydroxide ions (OH-) in water and has a pH above 7
compound different elements that are chemically combined
covalent bond chemical bond formed when two atoms share electrons
element substance that can't be broken down into simpler chemical substances
ion atom or a group of atoms that gain or lose elctrons ; has an electrical charge
ionic bond chemical bond formed by the attraction forces between two ions of opposite charge
isotope atoms of the same element that have different numbers of neutrons in the nucleus
metabolism all of the chemical reactions that occur within an organism
mixture combination of substances in which individual components retain their own properties
molecule group of atoms hels together by covalent bonds ; has no overall charge
nucleus positively charged center of an atom composed of neutrons and positively charged protons and surrounded by negatively charged electrons
pH measure of how acidic or basic a solution is
solution mixture in which one or more substances(solutes) are distributed evenly in another substance (solvent)
diffusion net, random movement of particles from an area of higher concentration to an area of lower concentration
dynamic equilibrium result of diffusion where there is continuous movement of particles but no overall change in concentration
hydrogen bond weak chemical bond formed by the attraction of positively charged hydrogen atoms to other negatively charged atoms
polar molecule molecule with an unequal distribution of charge
amino acid
carbohydrate
enzyme
isomer
lipid
nucleic acid
Created by: mariamejia14
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