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chemical |
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chemical any substance used in or resulting from a reaction involving changes to atoms or molecules, especially one derived artificially for practical use chemical [′kem·i·kəl] (chemistry) Related to the science of chemistry. A substance characterized by definite molecular composition. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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