Free Term-of-the-Day Widget
Put a fresh chemistry definition on your class page or website every day. One copy-paste, no account, no maintenance — the term rotates automatically from our dictionary of 1,509 terms.
Preview and colours
This is live — it is what your visitors would see today. Change the colours to match your site and the code below updates automatically.
Atomic mass is the weighted average mass of an element's naturally occurring isotopes. It considers both the exact weight and the natural abundance of each isotope. You can find this decimal number below the element symbol on…
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Iframe alternative (for site builders and learning platforms that strip scripts):
Terms of use
The widget is free for any website, including school and classroom pages. Please keep the credit link to chemistry-dictionary.com intact — it is how the widget pays for itself. The card is self-contained and will not affect your page styles; the definition changes once a day, automatically.
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