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Chemical equation balancer
The smallest whole-number coefficients, worked out exactly, and a plain refusal when an equation has none or has many.
It runs entirely in this browser tab: the seed makes a sheet repeatable, nothing is uploaded, and nothing about a child is stored anywhere.
Settings
- Arrow
- Choices: Plain, An arrow, Reversible.
- With the masses
- The mass of each side, which has to come out the same.
How to use it
- Paste your text into the box above, or open a file.
- Adjust the settings beside it until the result is what you wanted.
- Copy the result, or save it as a file. The result updates as you type.
Questions
- Can I print the same sheet again?
- Yes, and that is what the seed is for. Type a word or a number into it and the sheet is the same every time; share the link and everybody gets that sheet. A fresh one shows the seed it used, so a sheet that went well can be pinned after the fact.
- Where are the answers?
- On the sheet, unless you switch them off — and the result says which way round it is. Turn them off before handing it out; turn them back on for marking.
- Is anything about my class stored?
- No. There is no account, no progress and no score, and no list you paste leaves this tab. The sheet is drawn in the browser and printed from it.
- How do I print it?
- Copy or save the result and print that. What comes out is what is on the screen: the sheets are laid out to be printed rather than to be filled in on a phone.
Other tools for references
Periodic table reference
All 118 elements as a table to read or print: symbol, number, mass and kind, and the masses that are conventions say so.
Molar mass calculator
What a formula weighs, element by element, with the share each contributes and the moles in a weight you name.
SI prefix reference
Every prefix from quecto to quetta, with its factor written out, and a value converted from one to another.
Greek alphabet reference
All twenty-four letters, upper and lower case, with the name, how it is written in Latin letters, and what it usually stands for.
All twenty-four tools