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Molecules and covalent bonds
For final exam review
16
Chemistry
10th Grade
05/16/2012

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Term
a single atom with a positive or negative charge
Definition
ion
Term
two or more atoms covalently bonded
Definition
molecule
Term
a molecule with four electron groups; 4 bonded atoms and no unshared electron pairs has WHAT SHAPE?
Definition
tetrahedral
Term
When drawing Lewis structures, a _______ represents one of several possible formations of a molecule
Definition
resonance structure
Term
for a simple molecule, consisting of only two atoms, what is the only shape possible?
Definition
linear
Term
When determining the shape of a molecule, two things must be considered: number of bonded atoms and _______.
Definition
number of unshared pairs
Term
Polarity of a molecule depends upon polarity of bonds and upon _____
Definition
bond angles
Term
What term describes an attraction between non-polar molecules in which temporary dipoles are formed?
Definition
London forces
Term
A hydrocarbon that contains one or more double bonds is an _______
Definition
alkene
Term
Molecules with the same molecular formula but different arrangement of atoms are called _______
Definition
iosmers
Term
fats that contain the maximum number of hydrogens because the carbons are connected only by single bonds are _____
Definition
saturated fats
Term
fats that contain one or more double bonds and therefore fewer than the maximum number of hydrogens are ____
Definition
unsaturated fats
Term
the simplest ratio of cations to anions of an ionic compound is its ____
Definition
formula unit
Term
the number of particles in 1 mole of a substance is known as
Definition
Avogadro's constant
Term
a formula for a compound in which the lowest ratio of atoms is given is its _____
Definition
empirical formula
Term
the formula for a compound in which the actual number of atoms is given is its..
Definition
molecular formula
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