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  1. Problems
  2. /Metals and Non-metals

Metals and Non-metals

Chemistry
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30 problems
Type:
1.
Describe how copper is refined by electrolysis.
High School (9–10), General · Ionic Compounds and Extraction of MetalsStemPy LabStemPy Lab
Hard
2.
2.4 kg of haematite, Fe₂O₃, is reduced to iron: Fe₂O₃ + 3CO → 2Fe + 3CO₂.
High School (9–10), General · Ionic Compounds and Extraction of MetalsStemPy LabStemPy Lab
Medium
3.
Name the method used to get each metal from its compound: sodium, iron, copper (from a copper ore)…
High School (9–10), General · Ionic Compounds and Extraction of MetalsStemPy LabStemPy Lab
Medium
4.
Explain the words mineral, ore and gangue.
High School (9–10), General · Ionic Compounds and Extraction of MetalsStemPy LabStemPy Lab
Easy
5.
Potassium chloride melts at 1043 K and candle wax at 330 K.
High School (9–10), General · Ionic Compounds and Extraction of MetalsStemPy LabStemPy Lab
Medium
6.
A white solid is hard and brittle. It melts at 1100 K.
High School (9–10), General · Ionic Compounds and Extraction of MetalsStemPy LabStemPy Lab
Medium
7.
Give four properties of ionic compounds.
High School (9–10), General · Ionic Compounds and Extraction of MetalsStemPy LabStemPy Lab
Medium
8.
Why is the formula of magnesium chloride MgCl₂, and not MgCl? Show that MgCl₂ has no charge overall.
High School (9–10), General · Ionic Compounds and Extraction of MetalsStemPy LabStemPy Lab
Medium
9.
Find the formula of the compound of aluminium (atomic number 13) and fluorine (atomic number 9).
High School (9–10), General · Ionic Compounds and Extraction of MetalsStemPy LabStemPy Lab
Medium
10.
Describe what happens when sodium (2, 8, 1) reacts with chlorine (2, 8, 7).
High School (9–10), General · Ionic Compounds and Extraction of MetalsStemPy LabStemPy Lab
Easy
11.
A metal such as zinc gives hydrogen with dilute hydrochloric acid, but a non-metal such as sulphur…
High School (9–10), General · Reactions and the Reactivity SeriesStemPy LabStemPy Lab
Medium
12.
24 g of sulphur is burnt in oxygen: S + O₂ → SO₂.
High School (9–10), General · Reactions and the Reactivity SeriesStemPy LabStemPy Lab
Medium
13.
Write the equation of (a) carbon dioxide and (b) sulphur dioxide with water.
High School (9–10), General · Reactions and the Reactivity SeriesStemPy LabStemPy Lab
Easy
14.
7 g of iron is put in copper sulphate solution, and all of it reacts: Fe + CuSO₄ → FeSO₄ + Cu.
High School (9–10), General · Reactions and the Reactivity SeriesStemPy LabStemPy Lab
Medium
15.
Four metals P, Q, R and S are tested with solutions of their sulphates.
High School (9–10), General · Reactions and the Reactivity SeriesStemPy LabStemPy Lab
Medium
16.
Which of aluminium, lead, mercury and calcium react with dilute hydrochloric acid to give hydrogen?
High School (9–10), General · Reactions and the Reactivity SeriesStemPy LabStemPy Lab
Medium
17.
Write the balanced equation for the reaction of each with water.
High School (9–10), General · Reactions and the Reactivity SeriesStemPy LabStemPy Lab
Medium
18.
What is an amphoteric oxide? Name two. Write the equations of zinc oxide with hydrochloric acid and…
High School (9–10), General · Reactions and the Reactivity SeriesStemPy LabStemPy Lab
Medium
19.
Why are sodium and potassium kept under kerosene?
High School (9–10), General · Reactions and the Reactivity SeriesStemPy LabStemPy Lab
Medium
20.
Write the balanced equation for each. Sodium burns in oxygen.
High School (9–10), General · Reactions and the Reactivity SeriesStemPy LabStemPy Lab
Easy
21.
A bronze bell is 92 % copper and 8 % tin.
High School (9–10), General · Properties of Metals and Non-metalsStemPy LabStemPy Lab
Hard
22.
Why is solder used to join electric wires?
High School (9–10), General · Properties of Metals and Non-metalsStemPy LabStemPy Lab
Medium
23.
A brass door handle of 650 g is 62 % copper and 38 % zinc. Find the mass of each metal.
High School (9–10), General · Properties of Metals and Non-metalsStemPy LabStemPy Lab
Medium
24.
What is an alloy? Why is steel used for buildings and bridges, and not pure iron?
High School (9–10), General · Properties of Metals and Non-metalsStemPy LabStemPy Lab
Medium
25.
What is a metalloid? Name two. Why is silicon so useful in electronics?
High School (9–10), General · Properties of Metals and Non-metalsStemPy LabStemPy Lab
Easy
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