(a) Transition metals and group 1 metals have many properties in common because they are all metals - Edexcel - GCSE Chemistry - Question 3 - 2019 - Paper 1
Question 3
(a) Transition metals and group 1 metals have many properties in common because they are all metals.
However some properties of transition metals are different from... show full transcript
Worked Solution & Example Answer:(a) Transition metals and group 1 metals have many properties in common because they are all metals - Edexcel - GCSE Chemistry - Question 3 - 2019 - Paper 1
Step 1
Which is a property of transition metals but not of group 1 metals?
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Answer
The correct answer is B: high melting point. Transition metals generally have higher melting points compared to group 1 metals.
Step 2
Describe two changes you would see during this reaction.
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Answer
First, you would observe the formation of a reddish-brown deposit, which is copper, as magnesium displaces copper from copper sulfate. Second, the color of the solution would change from blue (due to the copper sulfate) to a colorless appearance as the copper ions are displaced.
Step 3
Give the name of the other substance needed for iron to rust.
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Answer
The other substance needed for iron to rust is oxygen.
Step 4
Describe a simple experiment to compare how much an iron nail rusts in sea water compared to water.
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To compare the rusting of iron nails, first clean two iron nails to remove any existing rust. Then, place one nail in a test tube filled with fresh water and the other nail in a test tube filled with sea water. Leave both test tubes for a set period, say a week, and then observe and record any changes, such as the appearance and any weight difference, to compare the extent of rusting.
Step 5
Calculate the mass of zinc required to coat the surface of the bucket with a layer of zinc of 200 g m².
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Answer
To calculate the mass of zinc required, use the formula:
