SNC1P Chemistry Test --
Name: __________________
Date: _________________
1. True/False: Indicate whether the statement is true (T) or false (F).
K: ____
50
[K: 20]
A: ____
30
____
1. An ion is an atom that has a positive electrical charge or a negative electrical charge.
____
2. A molecular compound is composed of a metal and a non-metal.
____
3. NaCl is a molecular compound.
____
4. CaCl2 is a compound of calcium and chlorine.
____
5. H2O contains 1 atom of hydrogen and 2 atoms of oxygen.
____
6. Chemical reactions may result in a change in colour.
____
7. Bubbles forming is usually evidence that a chemical reaction is occurring.
____
8. A solid substance that forms during a reaction is called a precipitate.
____
9. In a balanced chemical equation, the number of molecules of reactants is equal to the number of molecules of
products.
____ 10.
Na + Cl2  NaCl is a balanced chemical equation.
____ 11. In ionic compounds, atoms transfer electrons to form covalent bonds.
____ 12. Metals are found on the left hand side of the periodic table.
____ 13. Subscripts and coefficients can both be changed to balance a chemical equation.
____ 14. The Halogens are the most reactive non-metals
____ 15. Only electrons in the outer shell are involved when an atom chemically reacts.
____ 16. The atomic number of an element is the number of neutrons it has.
____ 17. A positive ion has more electrons than protons.
____ 18. The name of an element is only determined by the number of protons it has.
____ 19. In molecular compounds, oxygen can form two single bonds or 1 double bond\
____ 20. Columns in the periodic table are called groups
Fill in the blank
21. Use your periodic table to write either the symbol or the name of the following elements: [4]
Silver
________
Cu ____________________________
Sodium ________
Hg
____________________________
Multiple Choice [K: 5]
____
1. A molecule has one carbon atom and four hydrogen atoms.The molecule is
a. a molecular compound.
c. a molecular atom.
b. an ionic compound.
d. an ionic atom.
____
2. Which of the following is an example of a chemical change?
a. Water freezing to ice
b. Dissolving sugar into water
c. Burning leaves
d. Putting peanuts in a blender to make peanut butter
____
3. In a chemical reaction,
a. new reactants are produced.
b. either gas bubbles or a precipitate are always produced.
c. new atoms are created.
d. atoms are reorganized to form new substances.
____
4. In chemical equations, the reactants are always
a. produced as a result of energy being added.
b. to the left of the reaction arrow.
c. elements.
d. to the right of the reaction arrow.
____
5. Which of the following equations is balanced?
a. 2NaCl  Na + Cl2
c. NaCl  Na + Cl2
b. 2NaCl  2Na + Cl2
d. 2NaCl  Na + 2Cl2
Matching
6 -10 Identify the chemical name that matches the formula given. [K: 5]
a. oxygen gas
d. ammonia
b. carbon monoxide
e. water
c. carbon dioxide
f. table salt
____
6. H2O
____
7.
O2
____
9. NaCl
____
10.
NH3
____
8.
11 -15 Identify each compound listed below as ionic (I) or molecular (M).
____ 11. CCl4
____
12.
O3
____ 14. C6H12O6
____
15.
K2O
____
13.
CO2
[K: 5]
CaI2
16. Place one check mark in each row to indicate the classification of matter. [11 marks]
Homogeneous Heterogeneous
Mixture
Mixture
Element
Compound
muddy water
pepperoni pizza
apple juice
carbon
oxygen gas
ice
table salt
nitrogen
mixed nuts
milk
iron rod
Application
1. An atom has 8 protons, 9 neutrons and 10 electrons
A) The mass of this atom is : __________
B) The charge of this atom is: ____________
[1]
[1]
For the following, (circle one or more of the options) [3]
C) If you want to change the
type of element your atom is,
you can either:
D) If you want to change the
charge of your atom is,
you can either:
E) If you want to change the
mass of atom, you can either:
Add a proton
Add a neutron
Add an electron
Add a proton
Add a neutron
Add an electron
Add a proton
Add a neutron
Add an electron
2. Balance the following equations: [2]
+ ____ H2  ______ NH3
a)
____ N2
b)
____ H2O  ________ H2 + ______ O2
3. Use your periodic table to identify the group number and the family name of the following:
(Note: You only have to provide one family name for full marks – your choice of A, B, or C)
[4]
A: the most reactive metals: group number __________
name: ____________________________
B: the most reactive non-metals: group number __________
name: ____________________________
C: the least reactive elements: group number __________
name: _____________________________
4.Write the formula for the ionic compounds produced when the following elements react. [3]
a) Ca + O
b) Al + F
c) O + Na
5. State the law of conservation of mass. [1]
6.
Which element is more reactive – Neon (Ne) or Fluorine (F)? Explain your answer by discussing how their
electron shells are filled. (Hint: use their locations on the periodic table.) [2]
7)
Draw Bohr Rutherford diagram for the following elements: [4]
Helium
Fluorine
8. Classify the following situations as a chemical change (C) or a physical change (P). Write either C or P. [9]
_____ Fabian mixes sugar into a glass of water till it disappears
_____ Sasha burns leaves in his backyard
_____ Hana puts water into the freezer to make ice cubes
_____ Minhal’s plants use sunlight, water and CO2 to make sugar during photosynthesis
_____ Ruben grinds peanuts in a blender to make peanut butter
______ Fabian mixes baking soda and vinegar together, and this causes bubbles and foam.
______ Sasha drops a glass cup and it shatters on the ground.
______ Hana bakes a birthday cake for her mother.
______ Minhal’s bicycle rusts