Don't lose your points!
Sign up and save them.
+
Atomic Number, Ions and Isotopes

Atomic Number, Ions and Isotopes

Author: Katie Smith
Description:

The purpose of this packet is to compare two otherwise alike atoms when the number of protons, neutrons or electrons is different.

This packet includes several slide shows that will explain atomic numbers and mass numbers, and help you determine the number of protons, neutrons or electrons in a molecule.

(more)
See More
Fast, Free College Credit

Developing Effective Teams

Let's Ride
*No strings attached. This college course is 100% free and is worth 1 semester credit.

28 Sophia partners guarantee credit transfer.

281 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 25 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial

Introduction

In this packet, we will take a closer look at an atom.  We'll compare atoms that are otherwise alike, but with a different number of protons, then move on to different numbers of neutrons and electrons.

At this point, you should have an idea of what an atom is.  You have probably looked a bit at the periodic table, but if you're not familiar with how to use it, you'll want to find a list with the names of the elements, their symbols and their atomic numbers (check in your textbook!)   As you go through this packet, watch out for the terms atomic number, mass number, isotope, ion, cation and anion.

Atomic Number, Mass Number, and Ions

This slideshow will review atomic number, mass number and ions. The second slide shows a table of contents if you wish to skip around

Example Problems

At the end of each slide, stop and try to work through the problem before reviewing the solution on the next slide.

How to Write a Full Atomic Symbol