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Chemistry
Group 1 & 7
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Created by
Caitlin Allerton
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Cards (30)
What word describes how lithium, sodium and potassium react when put in water?
Vigorously
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What is produced when group 1 reacts with water?
A
metal hydroxide
solution
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What are group 1 elements called?
Alkaline metals
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What is the word equation for sodium reacting with water?
Sodium
+ Water --> Sodium hydroxide +
Hydrogen
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What is the chemical symbol for sodium reacting with water?
2Na(s) + 2H2O(l)→
2NaOH(aq)
+
H2(s)
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What is produced when alkali metals react with
oxygen
?
Metal oxide
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Lithium
+
Oxygen
Lithium oxide
(
Li2O
)
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Sodium + Oxygen
- Sodium
oxide
(NaO2)
- Sodium
peroxide
(Na2O2)
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Potassium
+
Oxygen
-
Potassium peroxide
(K202)
-
Potassium superoxide
(KO2)
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As you go ___ Group 1 the elements become ___ reactive
Down
More
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Lithium takes ____ than sodium or potassium to react, so it's the ___ reactive
Longer
Least
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Potassium takes the ____ time to react of these three elements, so it's the ___ reactive
Shortest
Most
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Potassium reacts to form its oxide ___ than sodium and lithium when left in air
Quicker
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All Group 1 metals have ____ in their outer shell
1
electron
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As you go down Group 1, the ___ is in a shell that's ____ from the nucleus
Outermost
electron
Furthest
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Which means the ___ between the outermost electron and the nucleus becomes ___
Attraction
Less
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So as you go down Group 1 the atoms get bigger, the outer electron is more ___, and the metals are ___
Easily lost
More reactive
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What are group 7 called in the periodic table?
Halogens
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As the atomic number of the halogens ___, the elements have a darker colour and a ____.
Increases
Higher
boiling point
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What is chlorine like at room temperature?
Chlorine
(Cl2) is a fairly reactive,
poisonous
, green gas
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What is bromine like at room temperature?
Bromine
(Br2) is a poisonous, red-brown liquid, which gives off an
orange vapour
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What is iodine like at room temperature?
Iodine
(I2) is a dark grey crystalline solid which gives off a
purple vapour
when heated
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Chlorin
e
Atomic
number:
Colour:
State at room temp:
Boiling point:
17
Green
Gas
-34
Celsius
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Bromin
e
Atomic number:
Colour:
State at room temp:
Boiling point:
35
Red-brown
Liquid
59
Celsius
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Iodin
e
Atomic number:
Colour:
State at room temp:
Boiling point:
53
Dark grey
Solid
185
Celsius
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The ___ Group 7 an element is, the ___ reactive it is
Higher
up
More
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All Group 7 elements have ___ in their outer shell.
7
electrons
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They can ___ one electron to form a ___
Gain
1-
ion
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The easier it is for a halogen atom to __ an electron, the __ reactive the halogen will be.
Attract
More
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As you go down Group 7, the halogens become __ reactive — it gets ___ to attract the extra electron to __ the outer shell when it's ___ away from the nucleus (the atomic radius is larger).
Less
Harder
Fill
Further
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