Clil Module Periodic Table Of The Elements Worksheet - Prof.ssa Elena Tibaldi - Istituto Sant''Anna - 2012-2013 Page 36
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48LISTEN TO THE VIDEO ON PERIODIC TABLE
AND COMPLETE THE TEXT
ct.shtml
The periodic table is (1)_______________designed to provide information about an
element based on its (2)______________ in the table. Sections of the table
(3)________________ different types of elements.
First we look at alkali metals. These are (4)_______, (5)________ metals. They are
group 1 in the table and need to be stored in (6)_____________to avoid contact with
(7)___________or (8)____________. The alkali metals have many similar properties:
low (9)____________and (10)___________points, they are very (11)________, they
have (12)_________ densities and they all (13)____________with water to produce
hydroxide
and
(14)____________________
gas.
The
hydroxides
and
oxydes
(15)_________________ in water to form alkaline (16)__________________.
The elements in group 0 are called the (17)_________gases. They appear on the extreme
(18)_________ in the periodic table. Noble gases are all chemically (19)____________,
or, you can say, (20)_____________. The characteristics (21)_____________ by the
Noble gases are: they have low (22)___________ points which (23)______________ as
you go down the group and they have low (24)______________ which (25)_________-
increase as you go down the group. Because they are inert they are used in light
(26)___________ and prevent the filament burning (27)____________ when the
electricity passes (28)__________________ it. Helium, at the (29)_____________ of
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the group, has a very low density so when it’s used in balloons they (30)_________ in air.
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