Chemistry 9701/22 — May/June 2023
Cambridge AS Level · AS Level Structured Questions · worked solutions for every part, with the mark scheme
Topics Chemical Bonding · Introduction to Organic Chemistry · Carboxylic Acids and Derivatives · Hydroxy Compounds · Hydrocarbons · Chemical Periodicity · +10 more
The melting points of some solids are shown in Table 1.1.
Table 1.1
| solid | melting point/K |
|---|---|
| magnesium | 923 |
| phosphorus | 317 |
| sodium chloride | 1074 |
| sulfur | 392 |
State the type of bonding present in magnesium and in sodium chloride.
bonding in magnesium
bonding in sodium chloride
Explain the difference in the melting points of magnesium and sodium chloride.
Explain the difference in the melting points of phosphorus and sulfur in terms of structure and bonding.
Define electronegativity.
Explain why electronegativity increases across a period.
Name the strongest intermolecular force that exists between molecules.
Draw a diagram to show the formation of the strongest intermolecular force between two molecules of .
Include any relevant lone pairs of electrons and dipoles.
The melting points of ice and ammonia are shown in Table 1.2.
Table 1.2
| solid | melting point/K |
|---|---|
| ice | 273 |
| ammonia | 195 |
Suggest two reasons for the difference in the melting points of ice and ammonia.
The rest of this paper
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