Let’s see how much you’ve picked up with these experiments and the reading – answer as best as you can. (No peeking at the answers until you’re done!) Just relax and see what jumps to mind when you read the question. You can also print these out and jot down your answers in your science notebook.
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  1. All visible matter is made up of…?
  2. What is a quark?
  3. What’s the charge on an electron, proton, and neutron?
  4. What keeps the quarks together inside a proton?
  5. Are free neutrons or protons more stable?
  6. What forces are the 79 protons together inside a gold atom feeling?
  7. Why does an electron stick around to orbit a nucleus?
  8. Where can you find anti-matter on Earth?
  9. What’s the difference between fusion and fission?
  10. Where can you find radiation?

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