SNC2DN -CHEMISTRY Diagnostic Test
Name:___________________________________Date:_________________________________
NOTE: The purpose of this test is to illustrate your current knowledge about specific domains in science. Your results on
this test will in no way directly affect course grade.
INSTRUCTIONS: Be as complete as possible. Do not go over the space provided. Fit the most important things that you
have to say in the space provided. Please write in complete sentences.
CHEMISTRY
1.
What is matter?
2.
What is the difference between an element, an atom, and a compound?
3.
What happens in a chemical reaction?
4.
Distinguish between a physical and chemical property. Provide examples of each.
5.
Label each of the following properties as either physical or chemical:
a. Copper sulfate crystals are blue.
b. Gold is an excellent conductor of electricity.
c. Iron rusts when exposed to air and water.
d. Salt is soluble in water.
e. Magnesium reacts with acid to produce hydrogen gas
f. Gasoline burns in a car engine.
6.
List 5 clues that indicate a chemical change has occurred.
7.
(a) What is the formula for density?
(b) Calculate the density of a 500g rectangular block with the dimensions 8cm x 6cm x 5cm.
8.
Define the terms: ion, anion and cation.
9.
What 3 main categories of elements make up the periodic table?
10. Define the terms periods and families/groups as they relate to the Periodic table.
11. Differentiate between homogeneous and heterogeneous mixtures. Provide examples of each.
12. Draw a Bohr Diagram for the element Aluminum.
13. Draw Bohr-Rutherford diagrams for Na, Cl-1
14. Complete the following chart:
Name of Compound
Chemical Formula
sodium fluoride
barium sulfide
CaCl2
KI
15. Complete the following chart
Element
Element
Atomic
Number of
Number of
Mass
Number of
Standard
name
symbol
number
protons
neutrons
Number
electrons
atomic
notation
Argon
40
40
18Ar
11
Carbon
11
16. What is an isotope?
17. What could a person do to prevent corrosion?
18. Fill in the blanks in the following sentences:
a)
b)
c)
d)
e)
f)
Protons are ___________ charged particles.
The mass of a proton is approximately equal to the mass of a(n) ___________.
The neutron is a __________ particle found in the ________ of an atom.
In all neutral atoms, the number of __________ is equal to the number of __________.
Most of the mass of an atom is contained in the ____________.
The lightest particles in an atom are ____________.
5B