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17 Cards in this Set

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groups of atoms held together in a stable association are called_____
molecules
Chemical bonds---
______ are molecules containing more than one type of element
Compounds
Chemical bonds hold together___ in molecules or compounds
atoms
these bonds can result when atoms with the opposite charge attract
Ionic bonds
______Bond -
when atoms share one or more pairs of electrons or where atoms intract in other ways
Covalent bonds
Ionic
Covalent
Hydrogen
are examples of what
chemical bonds
____ bonds are formed by the attraction of oppositly charged ions
Ionic bonds
ionic compounds tend to dissociate ( separate or go into solution) in water this is called ionization
___ bonds form when atoms share 2 or more valance electrons
Covalent bond
also shown at C-H
there are strengths single double, triple
what is the term that describes the formation or breaking of chemical bonds
Chemical reactions
chemical reactions are written with the reactant first, followed by the Products.
what is the most important property of water
the ability to form hydrogen bonds is the most important property.
what are the differences between Polar/nonpolar?
Polar covalent bonds unequal sharing of electrons (hydrophillic)
nonpolar- equal sharing of electrons (hydrophobic)
cohesion and adhesion are-
cohesion- when water molecules stick to other water molecules by hydrogen bonding ie surface tension
Adhesion- water molecules stick to other polar molecules by hydrogen bonding capillary action
solute and solvent. what are the differences
solute is what dissolves
solvent is what the solute disoloves in
which chemical releases H+ ions,
Base or Acid?
Acid releases , base accepts H+
what accepts or releases an H+ ion to keep the pH constant
a buffer chemical
the greater the H+ concentration the
____ pH
lower (acidic)
the Lower the H+ concentration the ______pH
higher pH (basic)