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34 Cards in this Set
- Front
- Back
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atom
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basic unit of matter
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nucleus
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the center of an atom
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electron
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negatively charged particle
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element
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pure substance
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isotope
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atoms of the same element with different number of neutrons
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compound
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combination of two or more elements
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ionic bond
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having an extra electron
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ion
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positively and negatively charged atoms
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covalent bond
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to atoms sharing electrons
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molecule
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smallest unit of most compounds
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van der waals forces
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a slight attraction that develops between the oppositely charged regions of nearby molecules
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cohesion
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an attraction between molecules of the same substance
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adhesion
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attraction between molecules of different sumbstances
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mixture
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to or more compounds or elements
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solution
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ions gradually become dispersed in the water froming a type of micture called a solution 9
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solute
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the thing that gets dispersed
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solvent
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the substance in which the solute dissolves in
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supension
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substances that cant disolve
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ph scale
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a scale that indicates the concentration of
H+ ions in a solution |
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acid
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any compound that forms H+ ions in solution
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base
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ia s compound that produces hydroxide ions
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buffer
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weak acids
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monomer
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small unit
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polymer
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small unit
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carbohydrate
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compound made up of carbon
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monosaccharide
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single sugar group
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polysaccharide
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large macromolecule
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lipiid
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fats
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nucleic acid
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small hydrogen based
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nucleotide
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made up of 5 carbon sugar
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RNA
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single strans of nucleic acid
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DNA
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nucleic acid that stores info
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protein
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needed by the body for growth
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amino acid
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compound with an amino group and a carboxyl group
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