Chemistry-Related

Chemistry 1
Question 1
1.1 The fundamental ideas in chemistry

Group 1 elements burn vigorously when heated in oxygen.
(a)Complete these diagrams to denominate the electronic structures of sodium and oxygen atoms.(2 marks)
(b)Write the word equality that describes the reaction between sodium and oxygen.(1 mark)
(c)Write the balanced compare for this reaction, including the arouse symbols.(3 marks)
(d)Why are the elements in group 0 unreactive?(1 mark)

Question 2
1.2 Limestone and building materials



When hydrated lime hydratestone is heated to make cement it first reacts to produce lime (calcium oxide).
(a)Write a word equality utilise chemic names for what happens when limestone is heated.(1 mark)
(b)Write the chemical formula for:
(i)limestone (1 mark)
(ii)lime (1 mark)
(c)Write a balanced equation with state symbols for what happens when limestone is heated.(2 marks)

Water reacts with lime to form slaked lime (calcium hydroxide).
(d)Write a word equation for this reaction using chemical names.(1 mark)
(e)Write a balanced equation with state symbols for this reaction.(3 marks)
(f)Farmers use slaked lime for liming the soil. Why is it necessary to lime some soils?(1 mark)

Question 3
1.



3 Metals and their uses

Copper can be obtained from solutions of tomentum salts by electrolysis or by displacement using bite iron. It can also be extracted by phytomining.
(a)Draw an arrow on the following reactivity series (reactivity decreases down the list) to head where copper should be placed.(1 mark)
sodium
calcium
magnesium
aluminium
carbon
zinc
iron
(b)Write a word equation for the displacement of copper from copper sulfate solution by iron.(1 mark)
(c)Write a balanced equation with state symbols for this reaction.(3 marks)
(d) inform why copper is produced at the negative electrode during electrolysis.
(2 marks)
(e)What is phytomining?(2 marks)
(f)Predict the method acting of extraction used to...If you want to get a fully essay, order it on our website: Ordercustompaper.com



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