Activity #38 Atomic Theory: How do we know what atoms are made of? In science, we use models to help us understand particles, like atoms, that are too.
Chapter 4
CHAPTER 5 Atomic Structure © 2013 Marshall Cavendish International (Singapore) Private Limited.
Chapter 4: Atomic Structure. 4.1 Defining the Atom An Atom is the smallest particle of an element that retains its identity in a chemical reaction. The.
