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chapter 6 vocabulary

TermDefinition
elements substances in everything
atom smallest particle of an element
nucleus the center of an atom
isotopes atoms of the same element that have different numbers of neutrons
compound substance that is composed of atoms of 2 or more different elements that are chemically combined
covalent bond the force that holds two atoms together
molecule group of atoms held together by covalent bonds
ion a charged particle made of atoms
ionic bond the attractive force between two ions of opposite charge
metabolism all of the chemical reactions that occur within an organism
mixture a combination od substances in which the individual components retain their own properties
solution a mixture in which one of more substances are distributed evenly in another substance
pH a measure of how acidic of basic a solution is
acid any substance that forms hydrogen ions
base any substance that forms hydroxide ions
polar molecule a molecule with an unequal distribution of charge
hydrogen bond a weak bond between hydrogen and oxygen
diffusion the net movement of particles from an area of high concentration to low concentration
carbohydrate a biomolecule compound of carbon, hydrogen, and oxygen
lipids large biomolecules that are made mostly of carbon and hydrogen
protein a large, complex polymer composed of carbon, nitrogen, and sometimes sulfur
peptide bond the covalent bond formed between the amino acids
nucleic acid a complex biomolecule that stores cellular information in the form of a code
nucleotides nucleic acids are polymers made of smaller subunits
dynamuc equillbrium
carbohydrate biomolecule composed of carbon hydrogen and oxygen
amino acids the basic building blocks of proteins
Created by: _sbp
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