The elements lithium, sodium and potassium are all in the same group of the periodic table - Edexcel - GCSE Chemistry - Question 3 - 2012 - Paper 1
Question 3
The elements lithium, sodium and potassium are all in the same group of the periodic table.
(a) Complete the sentence by putting a cross (X) in the box next to your... show full transcript
Worked Solution & Example Answer:The elements lithium, sodium and potassium are all in the same group of the periodic table - Edexcel - GCSE Chemistry - Question 3 - 2012 - Paper 1
Step 1
Complete the sentence by putting a cross (X) in the box next to your answer.
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Answer
These elements are in B group 1.
Step 2
Give the symbol of an atom of another element that is in the same group of the periodic table as lithium, sodium and potassium.
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Answer
The symbol can be Rb (Rubidium), Cs (Cesium), or Fr (Francium).
Step 3
One line from alkali metals to soft and low melting points.
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Answer
Lithium, Sodium, and Potassium are alkali metals with low melting points.
Step 4
One line from transition metals to strong and high melting points.
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Answer
Iron, Copper, and Nickel are transition metals with high melting points.
Step 5
Safety precautions for handling potassium.
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Answer
Any one of the following points: 1) use small piece of potassium, 2) use safety screen/shield, 3) ensure students are at a safe distance, 4) wear gloves.
Step 6
Chemical formula for potassium hydroxide.
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