You will need a Databook or periodic table for some parts of this HW.
1) Write down the symbols for 2 elements that are considered to be;
a) Metals
b) Non-metals
c) Solids
d) Liquids
e) Gases
(5 marks)
2) Write down the names of 2 elements that are considered to be;
a) Alkali metals
b) Earth alkali metals
c) Transition metals
d) Halogens
e) Noble Gases
(5 marks)
3) Write down the symbols of any 2 elements that are considered to be;
a) In the same group
b) In the same period
c) Physically similar looking
d) Of similar chemical reactivity
(4 marks)
4) Draw a diagram to show the structure of an atom and clearly label each of the following on your
diagram;
a)
Nucleus
b)
Protons
c)
Neutrons
d)
Electrons
(1 mark)
5) Why is an atom neutral?
(1 mark)
6) Copy and complete the following table;
Particle
Proton
Neutron
Electron
Mass
Charge
Location
(3 marks)
Questions continued over the page -------------------------------------->>>
7) Consider the following list of elements;
Magnesium
a)
b)
c)
Oxygen
Carbon
Chlorine
Which element has an atomic number 17?
Which element has 11 electrons in each atom?
Which element has a charge of 8+ on its nucleus?
8) For atomic numbers 3, 10 and 17, write down;
a)
The name of the element
b)
The electron arrangement
Sodium
Nitrogen
(3 marks)
(3 marks)
Total 25 marks
You will need a Databook or periodic table for some parts of this HW.
1) For the following elements list the number of protons, electrons and neutrons.
(a)
3
H
1
(b)
40
Ca
20
(c)
32
S
16
2) Explain what is meant by
a) A molecule
b) A chemical formula
c) A diatomic molecule
3) Decide if each of the following compounds
(a)
sodium chloride
(b)
hydrogen chloride
(c)
carbon sulphide
(d)
aluminium nitrate
4) Write the
(a)
(b)
(c)
(d)
(3 marks)
(3 marks)
are IONIC or COVALENT.
(e)
CH3Cl
(f)
MgO
(g)
NO2
(h)
FeCl2
formula using either the valency
sulphur trioxide
hydrogen oxide
phosphorus pentachloride
calcium fluoride
(8 marks)
or prefix rule for the following;
(e)
carbon monoxide
(f)
nitrogen chloride
(g)
aluminium oxide
(h)
hydrogen iodide
(8 marks)
5) Draw orbital or bonding diagrams for the following;
(a)
Silicon
(e)
Carbon dioxide
(b)
Phosphorus hydride
(i)
Argon
(c)
Nitrogen
(j)
Hydrogen
(d)
Hydrogen chloride
(k)
Phosphorus
(8 marks)
Total 30 marks
You will need a Databook or periodic table for some parts of this HW.
1) Write formula equations for the following examples;
a)
carbon
+
chlorine
carbon tetrachloride
b)
calcium
+
fluorine
calcium fluoride
c)
hydrogen
+
sulphur
hydrogen sulphide
d)
lithium
+
oxygen
lithium oxide
(4 marks)
2) Copy and complete the following table by writing the formula using either the valency or
prefix rule, and then calculating the formula mass.
Chemical Compound
Formula
Formula Mass
Dinitrogen Trichloride
Calcium Bromide
Potassium Oxide
(6 marks)
3) Copy and complete the blanks in the following table;
Name of Compound
and state at room
temperature
Melting/boiling
point
(high/low)
Calcium oxide (s)
Sulphur dioxide (g)
Barium chloride (s)
Potassium iodide (s)
Carbon monoxide (g)
Nitrogen dioxide (g)
Magnesium chloride (s)
Water (l)
high
high
low
low
high
low
Solubility in
water
(s/vs/i)
(databook)
s
s
vs
s
s
vs
N/A
Conducts
Electricity
in solution?
(y/n)
y
n
y
y
n
Type of Bonding
(covalent or
ionic)
covalent
ionic
ionic
covalent
ionic
n
(8 marks)
Total 18 marks