What products are formed when sodium is placed in water?

Sodium hydroxide + hydrogen gas

How are elements arranged in the Periodic Table?

Increasing proton (atomic) number

Which reason explains why Group 0 elements are unreactive?

They have a fully filled outermost electron shell.

Which statement is true about Group I metals?

They must be kept in oil at all times to prevent oxidation.

What happens when chlorine is added to colourless sodium bromide?

Chlorine displaces bromine - solution turns reddish-brown

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Sec 4 Periodic Table

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A summary of features of Periodic Table, Group I, Group VII and Group 0

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Questions 14

Answers

1
Which Group is Neon in?
Group I
It does not belong to any Group
Group 0
Group VIII
2
What is the main use for Group 0 elements (noble gases)?
Breathing
Fuel for burning
Photosynthesis
Provide inert atmosphere
3
What products are formed when sodium is placed in water?
Sodium hydroxide + hydrogen gas
Sodium oxide + water
Sodium hydroxide + water
Sodium oxide + hydrogen gas
4
How are elements arranged in the Periodic Table?
Increasing atomic mass
Decreasing atomic mass
Increasing proton (atomic) number
Decreasing proton (atomic) number
5
Sodium has an electronic configuration of 2,8,1. How many valence electron(s) does it have?
8
3
1
2
6
What is the appearance of pure iodine?
Pale yellow gas
Brown liquid
Purplish-black solid
Greenish-yellow gas
7
Sodium has an electronic configuration of 2,8,1. How many electron shell(s) does it have?
1
8
2
3
8
Which reason explains why Group 0 elements are unreactive?
They are non-metals.
They have a fully filled outermost electron shell.
They have low melting & boiling points.
They are colourless gases.
9
What happens to melting/boiling points of Group VII elements down the Group?
Increase
Decrease
Remain the same
No trend observed
10
What are the horizontal rows known as?
Rows
Periods
Groups
Columns
11
Which Period is Silicon in?
Period 2
Period III
Period 3
Period II
12
Which element in Group VII is most reactive?
Bromine
Chlorine
Fluorine
Iodine
13
Which statement is true about Group I metals?
They must be kept in oil at all times to prevent oxidation.
They are very dense and sink in water.
Their melting and boiling points increase down the Group.
They are very hard.
14
What happens when chlorine is added to colourless sodium bromide?
Chlorine displaces bromine - solution turns reddish-brown
Bromine displaces chlorine - solution turns greenish-yellow
No reaction occurs - no visible change observed

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