Chemistry Symbols
Copy common molecules, ions, reaction arrows, and trend markers for chemistry notes.
Keep the molecules, charged species, and reaction symbols students most often write together on one page.
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Molecules and ions
Common molecular and ionic notation used together in chemistry notes.
Reactions and change
Equilibrium, reaction, heat, trend, and approximation markers.
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Useful combinations for notes, equations, and documents. Copy one as-is, then edit it in your document.
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Technical and compatibility guide
This collection helps type short molecular formulas, ionic charges, and reaction arrows in ordinary text. It is a notation aid, not a reaction-balancing or chemistry-reference tool.
| Character | Unicode | HTML | LaTeX |
|---|---|---|---|
| H₂OWater formula | U+0048 U+2082 U+004F | H₂O | \mathrm{H_2O} |
| Na⁺Sodium ion | U+004E U+0061 U+207A | Na⁺ | \mathrm{Na^+} |
| ⇌Rightwards and leftwards harpoons | U+21CC | ⇌ | \rightleftharpoons |
Common mistakes
- Keep subscripts and charges in their proper positions: H₂O uses a subscript 2, while Na⁺ uses a superscript charge.
- Do not treat →, ⇌, ↑, and ↓ as interchangeable. Their meanings depend on the reaction notation and the convention used by the source.
Word, Docs, Notion, and plain text
Short formulas paste into Word, Google Docs, Notion, and plain text as Unicode. Unicode has only a limited set of subscript and superscript characters; for complex formulae, use an equation tool. Notion also documents the mhchem-style \ce command in equation blocks.
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Frequently asked questions
How do I copy these symbols?
Press any large symbol card or snippet. Quick Symbols copies it immediately and adds it to the copy tray, where you can combine several items.
Can I use these in Notion or Google Docs?
Yes. These are standard text characters, so you can paste them into Notion, Google Docs, email, notes, and most other text fields.
Do these work in Microsoft Word?
Yes. Paste them into Word like ordinary text. Their exact appearance can vary slightly with the selected font.
What is the difference between similar symbols?
The groups on this page explain the practical differences between the chemistry symbols shown here, including which forms fit common notes and equations.