Chemistry Unit Test Review - from SNC2P
1. Classify the following substances by circling all terms that apply:
a. tap water
i. Pure Substance
ii. Mixture
iii. Element
iv. Compound
v. Solution
vi. Mechanical Mixture
c. lithium
i.
ii.
iii.
iv.
v.
vi.
b. pizza
i.
ii.
iii.
iv.
v.
vi.
d. carbon dioxide
i. Pure Substance
ii. Mixture
iii. Element
iv. Compound
v. Solution
vi. Mechanical Mixture
Pure Substance
Mixture
Element
Compound
Solution
Mechanical Mixture
2. Use your periodic table to complete the information below:
a. For the most common isotope of potassium:
i. The number of protons
Pure Substance
Mixture
Element
Compound
Solution
Mechanical Mixture
b. For the most common isotope of sulfur:
i. The number of protons
ii. The number of electrons
ii. The number of electrons
iii. The atomic notation
iii. The atomic notation
iv. The number of neutrons
iv. The number of neutrons
3. Draw the Bohr-Rutherford Diagram for each of the following:
a. A neutral atom of fluorine
b. A neutral atom of sodium
4. What type of change (physical or chemical) occurs for each of the following:
a. Cutting paper into small pieces _____________________
How do you know?
b. A fire burning ___________________
How do you know?
c. Melting ice _____________________
How do you know?
________________________________________________________________________________________
d. Fruit rotting _________________
How do you know? _______________________________________________________________________
5. What is the ionic charge for each of the following elements?
a) magnesium____________
b) fluorine______________
c) potassium_____________
d) aluminum____________
6.What chemical family is lithium from? Give 2 physical properties of elements from this group.
7. Draw a Bohr Rutherford diagram for the following ions:
a. The ion formed by oxygen. What is its charge?
Charge:____________
b. The ion formed by sodium. What is its charge?
Charge:____________
8. Write the correct name for each of the following compounds.
a) KBr _____________________________________________
b) Mg3N2 ________________________________________________
c) CaI2 ________________________________________________
d) Al2O3 ________________________________________________
e) Li2S ______________________________________________
f)
NaCl _________________________________________________
9. Write the chemical formula for each of the following compounds.
a) beryllium sulfide__________________________________________
b) calcium chloride________________________________________
c) potassium iodide________________________________________
d) aluminum silicide ________________________________________
e) magnesium carbide________________________________________
f)
calcium bromide______________________________________
10. Fill in the blanks in the table. You may use the periodic table and the table of polyatomic ions that has been
provided.
Table of Polyatomic Ions
Name
Nitrate
Hydroxide
Sulfate
Carbonate
Phosphate
Name of compound
Chemical Formula
NO3
OH
SO4
CO3
PO4
Type of Compound
(Ionic, Molecular or
Polyatomic)
Ionic Charge
-1
-1
-2
-2
-3
Molecular Formula of
Compound
beryllium chloride
phosphorous trioxide
calcium phosphate
dinitrogen tetrasulfide
Be(NO3)2
P2O3
Na2O
Al2(CO3)3
11. Name the following compounds.
a) Al2(SO4)3 ______________________________________
b) K4C _____________________________________
c) CO2 _______________________________________
d) Be3N2 ______________________________________
e) CaOH ______________________________________
12. Write chemical formulas for the following compounds:
a) calcium fluoride ___________________
b) potassium nitrate ____________________
c) silicon triiodide _______________________
d) lithium carbonate ______________________
13. Balance the following chemical equations. List the type of reaction (synthesis, decomposition, single displacement,
double displacement, combustion)
a) ____ Li + ____ NaCl  ____ LiCl2 + ____ Na
Type: __________________________
b) ____ NaOH + ____Ca(NO3)2  ____ Ca(OH)2 + ____ NaNO3
Type: __________________________
c) ____ S + ____ O2  SO2
Type: __________________________
d) ____CH4 + ____O2  ____ CO2
e) ____MgO  ____Mg
+
+ _____H2O
____O2
Type: __________________________
Type: ___________________________
14. Write the chemical equation for each of the following word equations (you do not need to balance
the equation):
a) potassium
+
aluminum bromide  potassium bromide
+
aluminum
b) lithium carbonate + beryllium nitrate  lithium nitrate + beryllium carbonate