Download SNC 1D Chemistry Review

SNC 1D Chemistry Review
True or False Questions
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1. The particles of solids are very closely arranged, giving them a defined shape.
2. The particles of gases have very strong attraction forces between each other.
3. Examples of quantitative properties are texture, smell and colour.
4. Two reactants can be combined in a chemical reaction and produce a
product whose weight is less than the total weight of the reactants.
5. Chemical changes are usually irreversible, they change the composition of
matter and they produce a new substance.
6. Like charges repel and unlike charges attract.
7. Atoms can’t be divided into smaller particles.
8. The mass number of an element is the sum of protons and neutrons of the
element.
9. Carbon has a larger atomic number than Lithium.
10. In the Periodic Table of Elements, the groups are vertical columns and the
periods are horizontal rows.
Multiple Choice Questions
1. An example of a physical change is:
a) Water evaporating
b) Salt dissolving in water
c) A block of wood sliced in 2
d) All of the above
2. An example of a chemical change is:
a) Iron rusting
b) A balloon being inflated with air
c) An omelet cooking
d) a) and c)
3. A block has a density of 15.2 g/mL and displaces 2 mL of water when placed in a glass
with water. What is the block’s mass?
a) 13.2 g
b) 30.4 g
c) 7.6 g
d) 17.2 g
28
4.
14
a)
b)
c)
d)
Si means that Silicon has:
An atomic number of 14, a mass number of 14 and 28 protons
An atomic number of 14, a mass number of 28 and 14 neutrons
A mass number of 28 and 28 protons, neutrons and electrons
A mass number of 14 and 14 protons, neutrons and electrons
5. Isotopes of an element have:
a) The same number of protons and neutrons
b) The same number of protons, but a different number of electrons
c) The same number of protons and electrons, but a different number of neutrons
d) The same number of neutrons, but a different number of protons
6. What is NOT true about ions?
a) They have an overall neutral charge
b) Negative ions are called anions
c) Ions are formed because atoms want to achieve a stable octet
d) A positively charged ion is formed when an atom loses an electron
7. Elements in the Halogen family of the Periodic Table of Elements:
a) Have 7 valence electrons
b) Often react with the Alkali Metals
c) Are very reactive because they want to gain 1 electron to achieve a stable octet
d) All of the above
8. Each element in a period has:
a) The same number of electron shells as the other elements in the period
b) 1 more electron on its outer shell than the preceding element in the period
c) 1 more proton than the preceding element in the period
d) All of the above
9. A student reacts 2 substances together and a gas is produced. To find out what gas it was, the
student put a burning splint near the gas and the splint was extinguished. The gas was:
a) Hydrogen
b) Carbon dioxide
c) Oxygen
10. Which of the following scientists first said that the atom contained positively charged
particles called protons and negatively charged particles called electrons?
a) Thomson
b) Dalton
c) Rutherford
d) Bohr
11. The observations from Rutherford’s gold foil experiment are:
a) Most of the alpha particles bounced straight back and few went through the foil
b) Most of the alpha particles went through, some were deflected, a few bounced back
c) All of alpha particles went through the foil
d) None of the alpha particles went through the foil.
Matching
1. Write the letter that corresponds with the correct definition of each term in the ‘Definition’
column and write the Roman numeral that corresponds with the correct example of each term in
the “Example’ column.
Term
Compound
Element
Solution
Suspension
Ordinary Mechanical Mixture
Colloid
Definition
Example
Definitions
A) A pure substance that can’t be broken down into simpler parts.
B) A heterogeneous mixture where the different particles are big enough to see and stay mixed.
C) A homogeneous mixture of 2 or more substances.
D) A pure substance with 2 or more elements chemically combined together.
E) A homogeneous mixture where the particles are very small and won’t separate.
F) A mixture where the particles will separate over time.
Examples
I. Lithium chloride
II. Milk
III. Oil and vinegar salad dressing
IV. Sodium
V. Sugar water
VI. Granola bar
2. Match each sign of a chemical change with its example.
Sign of a Chemical Change
Examples
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A) Copper rusts
B) Sodium reacts with water
C) Wood burns
D) Vinegar is added to baking soda
E) Potassium iodide reacts with lead nitrate
Bubbling
Colour change
Starting material is used up
Precipitate is formed
Heat is produced
Short Answer Questions
1. Complete the following table.
Element Name
Aluminum
Element Symbol
Element Name
Ne
Argon
Mg
Helium
Fluorine
Beryllium
Element Symbol
K
P
Ca
2. Show Lewis Dot Diagrams for the bonding of the following ionic compounds.
Calcium fluoride
Lithium sulfide
Sodium chloride
3. Show how covalent bonding occurs in the following molecular compounds.
F2
CO2
4. State 3 differences between ionic compounds and molecular compounds.
_________________________________________________________________________
_________________________________________________________________________
_________________________________________________________________________
5. What electrons are involved in bonding? Where are they located in an atom?
__________________________________________________________________________
__________________________________________________________________________
6. Refer to the graph on the right to answer the following questions.
a) By looking at the graph, which substance was
the least dense?
_______________________________
b) Calculate the density of each substance.
Answers
True and False
1. True
2. False
3. False
4. False
5. True
6. True
7. False
8. True
9. True
10. True
Multiple Choice
1. d)
2. d)
3. b)
4. b)
5. c)
6. a)
7. d)
8. d)
9. b)
10. a)
11. b)
Matching
1.
Term
Compound
Element
Solution
Suspension
Ordinary Mechanical Mixture
Colloid
Definition
D
A
C
F
B
E
Example
I
IV
V
III
VI
II
2. D
A
C
E
B
Short Answer Questions
1.
Element Name
Aluminum
Neon
Fluorine
Magnesium
Beryllium
Element Symbol
Al
Ne
F
Mg
Be
5. The valence electrons,
located on the outer electron
shell of an atom, are involved
in bonding.
Element Name
Potassium
Argon
Phosphorus
Helium
Calcium
Bubbling
Colour change
Starting material is used up
Precipitate is formed
Heat is produced
Element Symbol
K
Ar
P
He
Ca
6. a) Alcohol
b) Alcohol: 0.86 g/mL
Water: 1.01 g/mL
Salt water: 1.06 g/mL
Extra Practice:
Density questions - http://www.zerobio.com/central/density.htm
Short quiz - http://www.zerobio.com/biofax5.htm