Advanced Placement Biology Mr. Jim Sullivan Boston University.
1. The ancient Greek philosopher Democritus coined what word for a tiny piece of matter that cannot be divided? a) Element b) Electron c) Atom d) Molecule.
Isotopes All atoms of an element have the same number of protons. However, they can have a different number of neutrons. What do we call an atom when they.
Physical Science Chapter 4. Atoms The atom is a basic unit of matter that consists of a dense central nucleus surrounded by a cloud of negatively charged.
Lesson 13
Atomic Structure
electrostatics.pdf
