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Discuss the properties of simple molecular compounds in relation to their structure and bonding, focusing on (a) their low melting and boiling points and (b) their poor electrical conductivity.

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Cambridge IGCSE ChemistryAtoms, elements and compoundsCore content

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Discuss the properties of simple molecular compounds in relation to their structure and bonding, focusing on (a) their low melting and boiling points and (b) their poor electrical conductivity

This point belongs to Simple molecules and covalent bonds, especially Simple molecules and covalent bonds outcomes.
You need to be able to discuss the properties of simple molecular compounds in relation to their structure and bonding, focusing on (a) their low melting and boiling points and (b) their poor electrical conductivity.
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DescribeDiscuss

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Paper 3 structured question: Simple molecules and covalent bonds

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Description

Properties of Simple Molecular Compounds

Simple molecular compounds, such as water and carbon dioxide, are characterized by their low melting and boiling points and poor electrical conductivity.

a
State one property of simple molecular compounds that affects their melting point.
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Aim for approximately 1 distinct marking point.
[1]

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Related learning objectives

Identify that a covalent bond occurs when two atoms share a pair of electrons, resulting in electronic configurations similar to noble gases.
Simple molecules and covalent bonds outcomes
Explain how covalent bonds are formed in simple molecules such as H₂, CH₄, H₂O, I₂, NH₃, and CCl₄, using dot-and-cross diagrams to illustrate their electronic configurations.
Simple molecules and covalent bonds outcomes
Illustrate the formation of covalent bonds in simple molecules such as CH₃OH, C₂H₄, O₂, CO₂, and N₂, using dot-and-cross diagrams to represent their electronic configurations.
Simple molecules and covalent bonds outcomes
Clarify the properties of simple molecular compounds in terms of their structure and bonding, explaining (a) low melting and boiling points due to weak intermolecular forces and (b) poor electrical conductivity.
Simple molecules and covalent bonds outcomes

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