Learning objective

Explain that a covalent bond occurs when two atoms share a pair of electrons, resulting in electronic configurations similar to noble gases.

Read the explanation, check the common trap, then practise with flashcards and questions.

Practise this topic Read the exam answer Topic hub

Exam focus

Read the explanation.
Check key terms.
Practise with linked questions.

Cambridge IGCSE Combined ScienceAtoms, elements and compoundsCore content

Study support

Understand this objective

Quick explanation

Explain that a covalent bond occurs when two atoms share a pair of electrons, resulting in electronic configurations similar to noble gases

This point belongs to Simple molecules and covalent bonds, especially Simple molecules and covalent bonds outcomes.
You need to be able to explain that a covalent bond occurs when two atoms share a pair of electrons, resulting in electronic configurations similar to noble gases.
The key ideas to know are State.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

State

Why it matters

This objective helps connect Simple molecules and covalent bonds outcomes to exam-style questions, flashcards, and revision notes for Simple molecules and covalent bonds.

Revision tools

Choose how to practise

Back to topic hub

Flashcards10 linked cards

Flashcard 1 of 10

Press Space to flip, arrows to move

Practice Questions7 linked questions

Question 1 of 7

Choose an answer, get feedback, then move sideways through the set.

0 of 5 attempted

Paper 3 structured question: Simple molecules and covalent bonds

Paper 3Theory (Core)3 marks

Description

Covalent Bonding

Covalent bonds are formed when two non-metal atoms share pairs of electrons. This sharing allows each atom to attain a stable electronic configuration similar to that of noble gases.

a
Explain the process of covalent bonding and its significance in achieving stability.
Your answer
Aim for approximately 3 distinct marking points.
[3]

Revision notestopic notes

Open the full topic revision notes when you are ready to review this objective in context.

Open revision notes

Related learning objectives

Illustrate how covalent bonds are formed in simple molecules such as H₂, Cl₂, H₂O, CH₄, NH₃, and C₂H₄, using dot-and-cross diagrams to represent their electronic configurations.
Simple molecules and covalent bonds outcomes
Outline the characteristics of simple molecular compounds, including their low melting and boiling points, as well as their poor electrical conductivity.
Simple molecules and covalent bonds outcomes
Explain the formation of covalent bonds in additional simple molecules such as CH₃OH, C₂H₄, O₂, CO, and N₂, using dot-and-cross diagrams to depict their electronic configurations.
Simple molecules and covalent bonds outcomes

Revision hubs

Move back to a broader study route

Cambridge IGCSE Combined Science resources