Chemistry Practice Test 1
1. Select the best word from the list to complete each of the following statements. ( 14 marks )
elements, gas, groups, formula, ion, neutralisation, negative, combustion,
decomposition, metals, neutrons, hydroxide, carbonate, positive
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
m.
n.
CO32- is called the ____________________ ion.
The _______________ for Sodium hydroxide is NaOH.
Iron, copper and lead are classified as ____________.
An acid reacting with a carbonate produces bubbles of carbon dioxide ___________.
An atom that has gained or lost electrons is called an ________.
One substance splitting into two or more substances is called ___________________.
Protons and ________________ are found in the nucleus of atoms.
OH- is called the _________________ ion.
Columns in the periodic table are called ______________.
The reaction between an acid and a base is called _____________________.
The periodic table contains only __________________.
The word ___________________ means burning.
Protons have a _________________ charge.
Electrons have a _________________ charge.
2. Using the Periodic Table, complete the table below. ( 4 marks )
Element Name Element Symbol Atomic number
Number of
protons
Number of
electrons
Lithium
3. Complete the following table. ( 6 marks )
Reaction
Reactants
Precipitation
Two soluble salt solutions
Neutralisation
Acid and base
Acid on Carbonate
Acid and carbonate
Acid on Metal
Acid and metal
Products
A soluble salt solution and an insoluble salt
4. Identify the mystery substance (P,Q,R,S,T,U) for each reaction. ( 6 marks )
Reaction
Mystery substance
Neutralisation: Hydrochloric acid is added to P and sodium chloride and
P:
water are produced.
Decomposition: Electricity is passed through water and Q and oxygen
Q:
gases are produced.
Combustion: Wood is heated in air and a gas R and water are produced.
R:
Precipitation: Aqueous silver nitrate is added to aqueous sodium chloride
and S, a white solid, is observed to have formed at the bottom of the
S:
reaction vessel.
Acid on a carbonate: Hydrobromic acid is added to calcium carbonate and
water, calcium bromide and a gas T are produced. The gas turns lime water T:
milky.
MASH: Magnesium metal is placed in acid and a gas U is formed.
U:
5. Match the following chemical equations with their coded representations:
1)
4)
C  O 2  CO2
N 2  3H 2  2NH3
Equation number
2)
5)
H 2  Cl 2  2HCl
CO  H 2 O  CO2  H 2
( 6 marks )
3)
CH 4  Cl 2  CH 3 Cl  HCl
6)
CH 4  2O 2  CO2  2H 2 O
Coded representation
6. Consider groups 1 to 8 of the periodic table and select the group which best matches the following
descriptions: ( 4 marks )
Description
Group
Highly reactive non-metals
Highly reactive metals
Non-reactive gases.
Reactive metals
7. Read the description and hence name the following substances and give their atomic symbol or
chemical formula. ( 18 marks )
Description
An acid composed of chlorine and one other
element
A metal in group 3 of the periodic table that is
used to make soft drink containers.
Substance Name
Symbol / Formula
A base made from sodium, oxygen and hydrogen
The second element in group 1
The element with 20 protons
The element with 15 electrons in its atoms
The gas that is detected using the pop test
A gas that turns limewater milky
The substance produced when magnesium is
combusted in air
8. For a practical investigation you did involving a chemical reaction with an acid as one of the
reactants and a gas as one of the products: ( 8 marks )
a) Write a word equation for the chemical reaction.
b) Describe the test you performed to confirm the identity of the gas that was produced.
9. How many neutrons does nitrogen-14 have?
( 2 marks )
10. Using the Periodic Table, complete the table below and hence draw the electron
configuration of Magnesium (Mg) and Lithium (Li). Show electrons arranged
correctly in their shells but don’t show protons and neutrons in the nucleus.
(13 marks)
Atomic
Element
number
Number
of
protons
Number
of
Period
electrons
Number
of shells
Group
Electrons in Shell
1st
2nd
Mg
Li
Magnesium (Mg)
Lithium (Li)
11. Complete the following table: (19 marks)
Cation
Charge
Anion
Na+
F-
Cu2+
CO 32 
Cation to
Charge
Anion
Ratio
Salt
formula
Salt name
Sodium Chloride
MgBr2
Al2O3
Ca(OH)2
Li+
O2-
Calcium Hydroxide
3rd