Chemistry Audit: below you will test yourself against the
fundamentals of chemistry that every chemist must know and
understand
Topics: reactions of acids, atomic structure, bonding, ionic formulae, balancing
equations
1. Write down the definition of each word below and give an example
Element:
Compound:
Mixture:
2. What is the difference between a chemical and a physical change?
3.
4.
5.
6.
7.
8.
What element is in group 2 period 3?
Where are alkali metals found in the periodic table?
What groups of the Periodic table contain non -metals?
What is the most reactive metal ?
What is the most reactive non -metal?
Write down the name of an element that is a:
Noble gas
Halogen
Transition metal
Alkali metal
Alkaline earth metal
9. Complete the table below
Subatomic
particle
Proton
Electron
Neutron
Symbol
Relative
charge
Relative
mass
Location in
atom
1
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10.
How many protons, electrons and neutrons does this atom below have?
11.
a. What does the term valence electrons mean?
b. How many valence electrons does calcium have?
c. How many valence electrons does astatine have?
12.
1.
2.
3.
4.
5.
What is the electronic configuration of:
Neon
Calcium
Ca 2 +
F
F-
13.
How many atoms are in the following?
d. H 2 O
e. H 2 SO 4
f. CaCO 3
14.
How many different elements are in the following?
g. H 2 O
h. H 2 SO 4
i. CaCO 3
15.
What are the formula for the f ollowing ions (include charges)?
Potassium
Magnesium
Boron
Oxide
Fluoride
Carbonate
Hydroxide
Nitrate
-
2
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16.
Draw a dot and cross diagram for sodium. (2 marks)
17.
Draw a dot and cross diagram for sodium b romide, showing outer
electrons onl y. (4 marks)
18.
NaBr has a high melting point, explain in terms of structure and bonding
why this is? (3 marks)
19.
Draw a dot and cross diagram for a chlorine molecule , showing only outer
electrons. (2 marks)
20.
Explain in terms of bonding and structure why chlorine is a gas at room
temperature? (3 marks)
3
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21.
Complete the following:
acid + metal oxide  ______________ + ____________________
acid + reactive metal  ______________ + ___________________
acid + metal carbonate  ________________ + _ _________________ + ____________
acid + base  _______________ + __________________
22.
Complete a balanced symbol equation (with state symbols) for the
following:
a) hydrochloric acid + magnesium carbonate  magnesium chloride + water +
carbon dioxide
b) magnesium + oxygen  magnesium oxide
c) chlorine + p otassium Iodide  Iodine + Potassium chloride
d) copper sulphate + iron  iron (II) sulfate + copper
e) copper(I) carbonate  copper oxide + carbon dioxide
f) sulphuric acid + zinc oxide  copper chloride + water
4
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