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