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C3a: What are atoms like?

1. An atom has a nucleus surrounded by electrons. The electrons go around the nucleus in shells.
Nucleus is made of protons and neutrons. Label these In the following diagram label these:





2. Protons are positively charged, so nucleus will have positive charge, (the nucleus…

Page 2

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13. A compound is a substance that contains at least two elements chemically combined. ( joined)
14. Identify the elements in these compounds from its formula, using a periodic table. If possible
state how many atoms of each element is present one has been done for you:
Fe3O4 ­ 3…

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lisa linsdell

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A good resource for foundation revision. This document contains the answers to questions posted in a separate document. Some of the graphics are a little bit misaligned, but not enough to confuse the reader.

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