1 / 5

Atomic Structure and Interactions in Living Things - A Brief Introduction

Understand the basic concepts of atomic structure and interactions in living things. Learn about atoms, elements, and the composition of an atom. Discover the role of protons, neutrons, and electrons in the nucleus and energy levels. Find out how to determine the number of protons, electrons, and neutrons in an atom.

joecjones
Download Presentation

Atomic Structure and Interactions in Living Things - A Brief Introduction

An Image/Link below is provided (as is) to download presentation 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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. KEY CONCEPTAll living things are based on atoms and their interactions.

  2. H O Living things consist of atoms • An atom is the smallest basic unit of matter. • An element is one type of atom. Hydrogen atom (H) Examples: Oxygen atom (O)

  3. Atoms are composed of three particles: • The nucleus has protons (+) and neutrons (o). • Electrons (-) orbit in energy levels around a nucleus. Nucleus:protons (+)neutrons (o) Energy level or orbital holds electrons (-)

  4. Definitions • Atomic Number = number of protons • Atomic weight/mass = # of protons + # of neutrons • Finding Protons, Electrons & Neutrons • Protons = Atomic number on Periodic Table • Electrons = same as protons • Neutrons = Atomic mass - Atomic number • (# protons + # neutrons) - # protons • ****No negative numbers, only whole numbers

  5. Oxygen atom (O) Nucleus:8 protons (+)8 neutrons inner energy level can hold 2 electrons (-) Diagramming Atoms All other energy levels can hold 8 electrons (-) Valence electrons: Electrons in the outermost energy level

More Related