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