Biology. Chapter 3 Section 1. Atoms. Smallest unit of matter that can not be broken down by chemical means. All matter is made up of atoms. Positively charges core surrounded by a negatively charged region. Atomic Structure. Atoms are made of three types of particles.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Chapter 3 Section 1
example: Each atom of the element carbon has 6 protons.
Atoms of an element can have different number of neutrons. These atoms are isotopes.