End of Chapter Test
Revision PowerPoint
Melting and Boiling Points
The melting point is the temperature at which a
solid to a ..............
liquid
substance changes from a ............
The boiling point is the temperature at which a
liquid to a ..............
gas
substance changes from a ............
0 and boils at 100
Water melts at .....°C
...... °C.
Metals and non-metals in the periodic table
The periodic table is a list of all the known elements that are
arranged according to the similarities in their properties.
Metals are on
the left and in
the centre.
Non-metals
are mostly
on the right.
What type of elements are between metals and non-metals?
Some extra Information about
the periodic table
• As you go across the periodic table the
number at the top of each element gets
higher.
• This is the relative atomic mass of the
element.
• The higher the relative atomic mass the
bigger the element.
What are the properties
(features) of metals?
•
•
•
•
•
Good conductor of electricity
Good Conductor of heat
Shiny
High Density (heavy for its size)
Malleable (you can hammer into
different shapes)
What are the properties of nonmetals?
•
•
•
•
•
Poor conductors of electricity
Poor conductors of heat
Dull
Low density
Brittle
Group 1 Metals
Alkali Metals
You need to know about there
reactions with water
(Equations must also be written in this format!)
• Lithium + Water
• Potassium + water
• Sodium + Water
Lithium Hydroxide + Hydrogen
Potassium Hydroxide + Hydrogen
Sodium Hydroxide + Hydrogen
Lets look at some of the alkaline
metals we can’t use in school!
• http://www.youtube.com/watch?v=m55kgyA
pYrY
Features of Group 1 Metals
• Like all metals they are good conductors of
electricity and heat.
• Shiny when cut
• They get more reactive as you go down a
group.
• There boiling point goes down as you go down
the group.
Group 7 Elements
The Halogens
Properties of Halogens
Need to learn!
Element
Symbol
State at
Colour
room
temperature
Fluorine
F
Gas
Pale Yellow
Chlorine
Cl
Gas
Yellow-Green
Bromine
Br
Liquid
Red-Brown
Iodine
I
Solid
Grey
Group 7 Reactions with Iron
• http://www.youtube.com/watch?v=EvtyMr5E
vBY
What happens to the reactivity of group
7 metals as we go down the group?
Displacement Reactions
• Step 1- Order the elements into reactivity. The
most reactive at the top and the least reactive
at the bottom.
Chlorine
Bromine
Iodine
Chlorine
Most Reactive
Bromine
Iodine
Least
Reactive
Displacement Reactions
• The more reactive element always beats
(displaces) the less reactive element.
e.g.
Chlorine + Potassium Bromide
Potassium Chloride + Bromine
Your Turn
• Bromine + Potassium Iodide
• Chloride + Sodium Bromide
• Iodine + Potassium Chloride
Group 0 Elements
Noble Gases
Features of Group 0
• The Group 0 elements are known as the
noble gases. They are un-reactive, which
means they do not react easily. They
show some patterns in their chemical
and physical properties. For example,
the elements lower down the group are
slightly more reactive than those at the
top of the group.
Why are they called the ‘noble gases’?
The noble gases all form colourless
gases at room temperature.
They are all very unreactive.
Noble gases were originally called ‘inert
gases’, as they were thought not to
react with anything. Then in 1962, a
British chemist, Neil Bartlett, made a
compound with xenon.
The name was changed to ‘noble gases’ as they were considered
similar to the very unreactive precious metals gold and platinum,
which are sometimes called ‘noble’ metals.
Now only neon and helium have not yet been made to form
compounds.