![Wordup](https://cdn-wordup.com/WebsiteImages/PublicPics/logoFinal.webp)
Atom
Chemical Composition![Play](https://cdn-wordup.com/WebsiteImages/DictionaryPics/BlackPlay.svg)
Atoms bond together to form molecules, which make up matter. ![Slide](https://word-images.cdn-wordup.com/tips/uJmzYc2T0SWsqUE27J9KhNCZF1o.webp)
Indivisible Concept![Play](https://cdn-wordup.com/WebsiteImages/DictionaryPics/BlackPlay.svg)
Historically, atoms were thought to be indivisible; now we know they consist of smaller particles. ![Slide](https://word-images.cdn-wordup.com/tips/2GLuXeibYuOhGVgNQmqlDRBqpI.webp)
Unique Identity![Play](https://cdn-wordup.com/WebsiteImages/DictionaryPics/BlackPlay.svg)
Every element on the periodic table is defined by the number of protons in its atoms. ![Slide](https://word-images.cdn-wordup.com/tips/A0KCFqw3OlMgQtATmbsmFgl6BE.webp)