2.30. Protons http://www.ck12.org
FIGURE 2.55
Vocabulary
- proton: Positively charged atomic particle inside the nucleus of an atom.
Explore More
Do the activity at the URL below for a better appreciation of the size of a proton.
http://www.pbs.org/wgbh/nova/teachers/activities/pdf/3012_elegant_13.pdf
Review
- Describe protons.
- What is the relationship between protons and elements?
- Atoms, which are always neutral in electric charge, contain electrons as well as protons and neutrons. An
electron has an electrical charge of -1. If an atom has three electrons, infer how many protons it has. - Identify the fundamental particles that make up a proton.