Have students create a chart similar to the one below. Cover box and turn over twice. Remove all radioactive atoms that have decayed. These are represented by pennies that show heads, sugar cubes ...

The method chosen depends on the type of mixture. Atomic structure - AQA Atoms consist of a nucleus containing protons and neutrons, surrounded by electrons in shells. The numbers of subatomic ...

Now you know that atoms are really small and that there are huge numbers of them, but here are a few other atom facts you might find interesting. Where do atoms come from? Believe it or not, the atoms ...