Covalent Bonding
Covalent bonding is the sharing of pairs of electrons between non-metal atoms to form molecules.
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Covalent bonding is the sharing of pairs of electrons between non-metal atoms to form molecules.
- Single, double and triple bonds exist
- Water and methane are simple molecules
- Each atom gains a full outer shell
🧠 Quick quiz
Three questions. Score 2 or more to complete the topic.
What is Covalent Bonding?
Within Chemistry, which covers atoms, bonding, reactions, the periodic table, organic chemistry and the chemistry of everyday life, this topic explains Covalent Bonding. Chemistry links what you can see in the lab to the particles and bonds behind it, so each topic here shows that link in a model.
Check that you can explain Covalent Bonding in your own words and give one example from everyday life. If you can do that, you have understood the core idea.
Understanding Covalent Bonding helps you explain why substances behave as they do, from cleaning products and food to medicines.
Covalent Bonding in detail
A covalent bond forms when two non-metal atoms share a pair of electrons, so each achieves a full outer shell. Examples are H₂, H₂O, CO₂ and CH₄. Double and triple bonds involve two and three shared pairs, as in O₂ and N₂.
Dot-and-cross diagrams show the shared electrons. The bond is strong, but the attraction between separate molecules is weak. Covalent substances can form small molecules or giant structures. Understanding covalent bonding explains the properties of water, organic compounds and many everyday materials.
How the interactive helps you understand Covalent Bonding
Watch the bonding model in the interactive. Use any sliders or buttons it offers to change the values and see how the bonding model responds.
Before you change anything, predict the result. Then change one value at a time and check whether your prediction was right. This is a quick way to build a correct mental model of Covalent Bonding.
Real-life uses and examples
- Use Covalent Bonding to explain what happens in a lab experiment and why.
- Link Covalent Bonding to everyday products such as cleaning agents, food and medicines.
- Read a chemical equation or diagram and work out what Covalent Bonding shows.
Common mistakes to avoid
- Describing what happens without explaining the particles or bonds involved.
- Mixing up the names of substances or ions when you describe Covalent Bonding.
- Learning the definition without testing it. Use the quiz and the interactive to check that you can apply the idea.
Frequently asked questions about Covalent Bonding
What is Covalent Bonding?
Covalent bonding is the sharing of pairs of electrons between non-metal atoms to form molecules.
What are the most important points about Covalent Bonding?
The main points are: Single, double and triple bonds exist; Water and methane are simple molecules; Each atom gains a full outer shell.
Why is Covalent Bonding useful?
Understanding Covalent Bonding helps you explain why substances behave as they do, from cleaning products and food to medicines.
How can I practise Covalent Bonding?
Open the interactive at the top of this page and change the controls one at a time. Predict the result before each change, then take the three-question quiz. A score of two or more marks the topic as complete on this device.
Which topics are related to Covalent Bonding?
Related topics in Chemistry include Properties of Simple Molecules, Nanoparticles, Balancing Equations.