Questions and Answers

Questions are an important part of the scientific process. Listed below are answers to some of the most common questions that visitors to our site have asked. Answers to other questions can be found in the Question Archive.

Atoms, Elements and Molecules

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How many protons, electrons and neutrons are in an atom of...?

How many electrons fit in each shell around an atom?

How do I make a model of an atom?

What does the element krypton look like?

Electricity and Magnetism

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What is an electromagnet?

How do I make an electromagnet?