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Isotopes and Atomic Mass

Are all atoms of an element the same? How can you tell one isotope from another? Use the sim to learn about isotopes and how abundance relates to the average atomic mass of an element. Objetivos de Ap ...

Build a Molecule

Hipervinculo Química

Build a Molecule

Starting from atoms, see how many molecules you can build. Collect your molecules and view them in 3D! Objetivos de Aprendizaje

Describe the difference between an atom and a molecule

Build simple m ...

Atomic theory Timeline (Softschools.com)

Atomic theory is the scientific theory of the nature of matter. The theory states that matter is made up of small particles called atoms. Prior to this theory, matter was thought to be able to be divi ...

Quizz: Odd facts about philosophers (Britannica.com)

You have 10 seconds to answer each question about philosophers. The faster you answer, the higher your score. When you're done, try again to beat your best score!

Democritus' Idea of the Ato? At grade

Introduction of the idea of the atom and the diversity of matter.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

Better Late than Neve? Basic

Learn why almost everything in the universe depends on atoms, how the idea of atoms came about, and how science might have been different if the idea had been accepted sooner.

It is an educational cont ...

What's the Real Story? At grade

Development of atomic theory from Democritus to Dalton to today.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

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