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Periodic Table Flashcards | StudBud

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Periodic Table

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Chemistry quiz to conclude the topic.

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Questions 12

Answers

1
Nature of oxides: Na₂O, Cl₂O, ZnO, NO
neutral, acidic, basic, basic
basic, acidic, basic, neutral
acidic, basic, amphoteric, acidic
basic, acidic, amphoteric, neutral
2
Across a Period, the metallic properties of the elements...
has no fixed pattern
decrease
increase
remain unchanged
3
Transition metals...
form coloured compounds.
all of the above.
may have multiple valencies.
often act as catalysts in chemical reactions.
4
What is the horizontal row in the Periodic Table called?
Group
Period
5
Halogens exist as...
diatomic molecules
oppositely charged ions
macromolecules
cations in a 'sea' of electrons
6
Group I metals are extracted from their compounds by ....
no extraction required
electrolysis
heating with coke
reduction
7
When chlorine gas is passed through KBr solution,
brown gas is given off.
black solid is formed.
the colourless solution turns reddish brown.
the brown solution turns colourless.
8
Elements are arranged in increasing order of...
proton number
size
atomic mass (Ar)
number of neutrons
9
Alkaline metals are in Group...
II
III
VII
I
10
Down Group VII, mp/bp ...... and reactivity ......
increase; increase
decrease; decrease
decrease; increase
increase; decrease
11
Group I metal salts are ....... in solid state and ..... in aqueous solution.
coloured; white
grey; white
white; colourless
silver; colourless
12
In Group I, melting point ......... and reactivity .......
decrease; decrease
increase; increase
decrease; increase
increase; decrease