CP6-+Ions

A positive ion (cation) is one that has lost an electron, whereas a negative ion (anion) is one that has gained an electron.
 * Ion:** an atom or molecule that has a positive or negative charge.

http://www.purchon.com/chemistry/ions.htm
 * Links:**

http://www.brainpop.com/science/matterandchemistry/ions-- ^ a fun video to watch to understand ions more clearly. When done watching the video, there are links underneath (Q&A, FYI, and Quiz) Video Name- Ions-- Login- Username- pvhs Password- pvhs

Slide on Ions The first set of slides has a slide on ions. It should be the fifth or fourth click.


 * Questions:**

1. What is the difference between an ion and an isotope? An ion has a different number of electrons - greater than or less than the number of protons - giving it a positive or negative charge. Isotopes are atoms of the same element that have different numbers of neutrons. 2. How do you determine the charge of an ion? If there are more electrons than protons in an atom, it has a negative charge. If there are more protons than electrons in an atom, it has a positive charge. 3. What would give the ion a negative charge? Positive? No charge? If an ion gains an electron to make it have more electrons than protons, it will have a negative charge. Vice versa will result in a positive ion. An ion has no charge when the number of protons and electrons are equal. 4. What is the difference between Na+ and Na? Na has no charge, meaning that it is a neutral atom, because the number of protons and electrons are the same. Na+ has a positive charge because it has one more proton than electrons. This is indicated by the + next to the symbol (means +1). 5. Do ions effect the number of protons? Neutrons? No, ions do no effect the numbers of protons or neutrons; they only have an effect on the number of electrons.