Chemistry B Final Exam Review: Question Preview (ID: 19975)

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When five pairs of electrons are shared in a molecule, what shape will the molecule be?
a) bent
b) linear
c) tetrahedral
d) trigonal bipyramidal

Outermost electrons
a) paired electrons
b) orbital electrons
c) valence electrons
d) outside electrons

What is the shape of a water molecule?
a) linear
b) tetrahedral
c) trigonal planar
d) bent

What two subatomic particles want to stay as far apart as possible in an atom?
a) Pairs of protons
b) Pairs of electrons
c) Pairs of neutrons
d) Paris of photons

What is the name of this ion: F-
a) Floride
b) Fluoride
c) Fluorine
d) None of these are correct

Name this compound: K2O
a) Potassium oxide
b) Potassium ion oxide
c) Potassium oxalate
d) Potassium oxsende

What the name of this ion: Fe2+
a) Scandium (IV)
b) Scandium (II)
c) Iron (II)
d) Iron (III)

What is the charge of an anion?
a) Positive
b) Negative
c) No charge
d) None of the above

What is the charge of a cation?
a) Positive
b) Negative
c) No charge
d) None of the above

Which of the following is the numner of electrons in the ion given correctly?
a) Na+ has 10 electrons
b) Cl- has 17 electrons
c) B3+ has 5 electrons
d) N- has 7 electrons

Ionic compounds end in the suffix __________________.
a) ite
b) ide
c) ate
d) ade

What is the molar mass of O2?
a) 8 g
b) 16 g
c) 32 g
d) 64 g

In a chemical reactions, energy can be
a) released
b) absorbed
c) released or absorbed
d) neither released no absorbed

What is a chemical reaction like?
a) More atoms on the product side
b) More atoms on the reactant side
c) Equal atoms on both sides
d) It depends on the reactions

What can be changed when balancing an equation?
a) coefficients
b) subscripts
c) chemical names
d) molecule names

Choose the false statement- The particles of gas are
a) compressible
b) always in motion
c) relatively far apart
d) arranged in an orderly pattern

What instrument is normally used to measure atmospheric pressure?
a) thermometer
b) barometer
c) hydrometer
d) spectrometer

Which unit represents pressure?
a) mole
b) newton
c) pascal
d) joule

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