When sodium is put into water

Melts to a ball, moves with a white trail, H2 gas , pH 12

Conductivity of electricity can tell metals from non-metals as

All metals and graphite ( a non-metal) conduct electricity

Potassium is more reactive than sodium because

Distance between outer electron and nucleus is bigger

The balanced equation for sodium in water is

2Na (s) + 2H2O(l) --> 2NaOH (aq) + H2(g)

Metal and non-metal oxides differ as

Metal oxides are alkaline and non-metal oxides are acidic

The periodic table is made up of

Mostly metals on the Left hand side

The difference between Groups and Periods is

Groups go down and periods go across the periodic table

Hydrochloric acid and calcium carbonate

Elements in the same group of the periodic table have similar chemical properties as

Groups have the same number of electrons in an outer shell

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The Periodic Table Key Stage 4

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Questions 20

Answers

1
When sodium is put into water
Melts, makes an acidic solution and hydrogen is given off
Melts, moves with a white trail and CO2 is given off
Does not react
Melts to a ball, moves with a white trail, H2 gas , pH 12
2
Conductivity of electricity can tell metals from non-metals as
Most metals are magnetic
All metals and graphite ( a non-metal) conduct electricity
Non-metals conduct electricity when molten or in solution
You cannot tell
3
Put the group 7 elements, F, Cl₂, Br_2,I₂ in order of colour
red, blue, green, yellow
green, dark green, brown, purple
yellow, brown, grey, purple
yellow green orange, dark Grey
4
Potassium is more reactive than sodium because
Distance between outer electron and nucleus is smaller
Distance between outer electron and nucleus is bigger
5
Group 0 elements are INERT because
They have no electrons in their outer shell
They all share their electrons with another element
They have a full outer shell
6
The balanced equation for sodium in water is
Na (s) + H2O(aq) --> NaOH (aq) + H2(g)
2Na (aq) + 2H2O(aq) --> 2NaOH (aq) + H2(aq)
2Na (s) + 2H2O(l) --> 2NaOH (aq) + H2(g)
2Na + H2O --> Na2O + H2
7
What is a REDOX reaction
2KCl + I2 --> 2KI + Cl2
Br2 + 2KCl --> Cl2 + 2KBr
F2 + 2KBr --> Br2 + 2KF
2KCl + At2 --> 2KAt + Cl2
8
What type of bonding does Hydrogen chloride have
james
covalent
metallic
ionic
9
Percentages of gases in the air are
79% O2 20% N2 0.9% CO2 0,04 Ar
79% N2 20% O2 0.9% Ar 0,04 CO2
79% N2 20% O2 0.9% CO2 0,04 Ar
79% O2 20% N2 0.9% Ar 0,04 CO2
10
Metal and non-metal oxides differ as
Metal oxides are alkaline and non-metal oxides are acidic
Metal oxides are acidic and non-metal oxides are alkaline
They do not form oxides
11
Why is HCl acidic in water but not in methylbenzene
HCl (aq) --> H+ + Cl-
HCl + C6H6CH3 --> C6H6CH4Cl
12
Which is the most reactive element in Group 7
Astatine
Fluorine
Chlorine
13
The periodic table is made up of
Mostly metals on the Left hand side
Mostly metals on the right hand side
Mostly non-metals on the left hand side
Mostly non-metals on the right hand side
14
In Group 1, reactivity
Increases down the group
Increases up the group
Is the same for all elements
There is no pattern of reactivity
15
Describe a physical test to show water is pure
Turns anhydrous copper sulfate white
Boils at 1000C
turns white anhydrous copper sulfate blue
16
What equation shows what happens If chlorine is added to Potassium bromide
Cl2 + KBr --> KCl + Br2
F2 + 2KBr --> 2KF + Br2
Cl2 + 2KBr --> 2KCl + Br2
I2 + 2 KBr --> 2KI + Br2
17
The difference between Groups and Periods is
Periods are vertically arranged in the Periodic table
Groups are horizontally arranged in the periodic table.
Groups go down and periods go across the periodic table
Groups are horizontal and periods vertical.
18
How is CO₂ made
Hydrogen peroxide with a MnO2 catalyst
Hydrochloric acid and calcium carbonate
sodium hydroxide and sulfuric acid
19
What is carbon dioxide not used for
Greenhouse gas
Carbonating drinks by forcing in under pressure
Extinguishing fires as it does not support combustion
20
Elements in the same group of the periodic table have similar chemical properties as
Groups have different numbers of electrons in their shells
Groups have the same number of electrons in an outer shell
Chemical reactions do not depend on movement of electrons
All Group 1 metals have a full outer shell

The Periodic Table Key Stage 4 Flashcards | StudBud