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20 Cards in this Set

  • Front
  • Back
subunits of elements
atoms
positively charges particles in the nucleus
protons
noncharged particles in hte nucleus
neutrons
negatively charged particles in energy levels around the nucleus
electrons
orbits that hold electrons at specific distances from the nucleus
energy levels
number of electrons lost or gained in a chemical reaction
valence electrons
combination of two or more atoms
molecule
substance composed of different elements
compounds
solvent, essentrial for metabolism
water
blend of two or more substances
mixture
substance remains evenly distibuted in solvent
homogenous
solution
material settles out of mixture
heterogeneous
suspension
particles do no dissolve but remain suspended
colloid
formed by transfer of electrons from one atom to another
ionic bonds
positively charged ion
cation
negatively charged ion
anion
formed by sharing of electrons between atoms
covalent bods
below 7
acidic
greater 7
basic
charicteristic of organic compounds
carbon