3 Written Questions
3 Multiple Choice Questions
- move rapidly around the nucleus and have a negative charge
- the number of protons in its nucleus
- the sum of the protons and neutrons in the nucleus of an atom
2 True/False Questions
model → may be a diagram, a mental picture, a mathematical statement, or an object that helps explain ideas about the natural world.
protons → atoms with the same number of protons and a different number of neutrons