IGCSE CHEMISTRY SOLVED past paper 0620/43/M/J/22 - May/June 2022 Paper 43

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This video solves and explains Cambridge IGCSE Chemistry paper 43 May / June 2022.

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Intro: (00:00)
Question1: (00:10)
1 A list of substances is shown.
aluminium oxide carbon dioxide carbon monoxide chlorine copper
glucose iron(III) oxide limestone nitrogen oxygen
Answer the questions using the substances in the list.
Each substance may be used once, more than once or not at all.
State which substance is:

Question2: (02:42)
2 (a) 3216S and 3316S are isotopes of sulfur.
Use your knowledge of protons, neutrons and electrons to answer the following questions.
(i) Describe how these isotopes of sulfur are the same and how they are different.

Question3: (08:45)
3 This question is about nitrogen and compounds of nitrogen.
(a) Nitrogen molecules have the formula N2.
Some properties of nitrogen are shown:
● melting point of –210°C
● boiling point of –196°C
● non-conductor of electricity when solid
● insoluble in water.
(i) Name the type of bonding between the atoms in an N2 molecule.

Question4: (13:56)
4 Ethanol is made industrially by the reaction of ethene with steam. The reaction occurs at a
temperature of 300°C and a pressure of 60 atmospheres.
C2H4(g) + H2O(g) C2H5OH(g)
A catalyst is used in this reaction.
The forward reaction is exothermic.
(a) State what is meant by the term catalyst.

Question5: (20:50)
5 This question is about copper and its compounds.
(a) Describe the bonding in a metallic element such as copper.
You may include a diagram as part of your answer.

Question6: (28:44)
6 The Periodic Table can be used to classify elements.
(a) The Group I metals react with cold water. Transition elements do not react with cold water.
(i) Describe two other differences in the chemical properties between Group I metals and
transition elements.

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