Unit 1 and 2
Exam Review
Grade 11 University
Chemistry
Multiple Choice
1. Which of the following statements
represents a quantitative
observation?
a) The reactant was orange in colour.
b) The product was very dense.
c) The orange colour disappeared
quickly.
d) The temperature in the test tube reached
250oC.
Multiple Choice
2. “The atom is mostly empty space. It
consists of a very dense positive nucleus
surrounded by electrons.” This
description BEST fits the atomic theory
proposed by
a) Dalton.
b) Thomson.
c) Rutherford.
d) Chadwick.
Multiple Choice
3. Isotopes of an element have
different numbers of
a) protons.
b) neutrons.
c) electrons.
d) protons, neutrons and electrons.
Multiple Choice
4. Which of the following symbols
represents an atom that contains
the largest number of neutrons?
a) 23592U
b) 23992U
c) 23993Np
d) 23994Pu
Multiple Choice
5. A white solid which has a sharp melting point is
decomposed by electrolysis to give a greenish
gas and a silvery solid. Attempts to decompose
these two substances were not successful. The
silvery solid and greenish gas are
a) elements from a compound.
b) the components of a homogeneous mixture.
c) elements from a homogeneous mixture.
d) the components of a heterogeneous mixture.
Multiple Choice
6.Which of the following statements about oxygen
describes its physical properties?
I) Oxygen has a density of 1.43 g/mL at STP.
II) Oxygen supports the burning of magnesium.
III) The melting point of oxygen is –218oC.
IV) Carbon combines with oxygen to form carbon
dioxide gas.
V) Oxygen reacts with iron to form rust.
a) I only
b) I and III
c) I, II and III
d) II, IV and V
Multiple Choice
7. An atom of the element “X” has the
orbital configuration 2, 5. Which of the
following would represent the most
commonly formed ion of “X”?
a) X 5+
b) X 5c) X 3+
d) X 3-
Multiple Choice
8. In which of the following sets do all
the atoms and ions have the same
number of electrons?
a) F-, Ne, Na+
b) F-, Cl-, Brc) He, Ne, Ar
d) Li+, Na+, K+
Multiple Choice
9. The least reactive of the following
elements is
a) potassium.
b) carbon.
c) argon.
d) iron.
Multiple Choice
10.Which of the following electron
configurations represents the most
reactive nonmetal?
a) 2, 8, 1
b) 2, 8, 3
c) 2, 8, 7
d) 2, 8, 8
Multiple Choice
11.Which element has the lowest first
ionization energy?
a) fluorine
b) neon
c) sodium
d) magnesium
Multiple Choice
12.A covalent bond would be most
likely to form between atoms of
chlorine and
a) potassium.
b) phosphorus.
c) magnesium.
d) iron.
Multiple Choice
13. The compound in the following list
which is the best example of an ionic
solid is:
a) calcium bromide (CaBr2)
b) boron (III) fluoride (BF3)
c) carbon tetrachloride (CCl4)
d) silicon (IV) hydride (SiH4)
Multiple Choice
14.In the H-Cl bond, the two bonding
electrons are located
a) closer to the hydrogen than the
chlorine atom.
b) closer to the chlorine atom than to the
hydrogen atom.
c) at the same distance from both the
hydrogen and the chlorine atoms.
d) at opposite ends of the bonds.
Multiple Choice
15.The bond in N2 can be best described as:
a) an ionic bond
b) a polar bond
c) a double bond
d) a triple bond
Multiple Choice
16.An unknown crystalline white solid was
dissolved in water. The solution was
tested with a conductivity apparatus and
the light bulb glowed brightly. The
identity of the solid is most likely:
a) potassium bromide
b) sodium metal
c) carbon disulphide
d) sulphur (VI) oxide
Multiple Choice
17.The correct formula for
hypochlorous acid is:
a) HCl (aq)
b) HClO3 (aq)
c) HClO2 (aq)
d) HClO (aq)
Multiple Choice
18.Which element has the highest
ionization energy?
a) fluorine
b) neon
c) sodium
d) magnesium
Multiple Choice
19)The chemical formula for iron (III)
chlorite is:
a)
b)
c)
d)
FeCl3
Fe(ClO4)3
Fe(ClO3)2
Fe(ClO2)3
Multiple Choice
20) Which one of the following groups
of elements will all produce acidic
solutions when their oxides are
added to water?
a)
b)
c)
d)
N,Mg,K Ni
Cl,S,Br,N
Cr,Hg,I,S
S,N,C,Ca
Multiple Choice
21) The set of coefficients that balances
the skeleton equation is:
Fe (s) + H2O (l)  Fe3O4 (aq) + H2 (g)
a)
b)
c)
d)
1,
1,
3,
1,
4,
4,
4,
2,
1,
3,
1,
3,
5
4
4
4