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WorksheetsAQA GCSE Chemistry Trilogy Periodic Table
Total questions: 14
Worksheet time: 8mins
How are elements arranged in the modern Periodic Table?
In rows called columns, by increasing mass number.
In rows called periods, by increasing mass number.
In rows called columns, by increasing atomic number.
In rows called periods, by increasing atomic number.
The electronic arrangement of oxygen is:
2,4
2,6
1,2,4
2,8
Mendeleev’s Periodic Table was revolutionary because (CHOOSE 2):
He ordered elements by both their properties and their proton number
He left gaps for undiscovered elements.
He swapped some elements so they fit into a group with similar properties
What group are the Alkali Metals in?
Group 1
Group 2
Group 7
Group 0
What group are the Halogens in?
Group 1
Group 2
Group 7
Group 0
What group are the Noble Gases in?
Group 1
Group 2
Group 7
Group 0
Elements in the same group in the Periodic Table have (CHOOSE 2):
Similar reactivity
The same melting and boiling points
The same number of outer shell electrons
The same mass
Select the correct physical properties of the alkali metals (CHOOSE 2).
Soft
Brittle
Dense
Have relatively low melting points
When lithium reacts with water, the following observations are true (CHOOSE 2):
Metal sinks.
Effervescence is seen.
Burns with a lilac flame.
Floats on the surface of the water.
When potassium reacts with water, the following observations are true (CHOOSE 2):
Melts into a ball and fizzes
It sinks
Burns with a lilac flame and floats
It doesn't react
Why do the alkali metals get more reactive down the group? (CHOOSE 3)
They are smaller and have less electron shells
They are larger and have more electron shells
It is easier for them to lose their outer electron
The attraction from the nucleus for the outer shell electron is less
Select the 2 true statements about the halogens at room temperature
Chlorine is a purple gas.
Iodine is a silvery-grey solid.
Fluorine is a green gas.
Bromine is a orangey-brown liquid.
Chlorine is more reactive than bromine, so it ........................... it from a compound
decomposes
neutralises
displaces
Cl2 + 2KBr -> 2 KCl + ......
Br2
KBr
K
ClBr
