When did we sign up for chemistry?!?!?!

Our nucleus prop
Not MUCH hapening - just a bunch
of protons and neutrons hanging out!!

Daily Questions Wednesday September 5^th

The nucleus of an atom contains which subatomic particles? Protons and Neutrons

Of these two – which defines an element? Protons(remember - that is really the only real "EXCITING thing" about the proton is that it defines the element. Not much going on - I related it to the "couch potato" of the atom.

Watch out - you slack off in here and
an electron may come flying your way.

Gold has the atomic number 79. How many protons are in an atom of gold? How many electrons are there?

79 Protons and 79 Electrons (Remember - in an elecrtically neutral atom, the number of protons = the number of electrons)

Which part of an atom is important in bonding and determining the charge of an atom?

Electrons "The MUCH more exciting and 'electric' part of the atom!!"

An atom that has a charge is known as an Ion

How was this charge acquired? By the gaining or losing of Electrons

Today we continued through the notes on ions and in to bonding and an introduction to water. Most of the period we worked on the differences betwen ionic and covalent bonds.  The way I always remembered the difference between the two was that prefix "co" means together or both (for example, you guys have CO-Ed gym because the boys and girls SHARE the gym) just like in a Covalent bond electrons are SHARED.  In an ionic bond electrons are actually lost or gained.  So when one atom gains an electron it "owns it".  A way to remember this is "Ionic means "I OWN it"! 

I told you I would never make you learn something that I couldn't give you a reason WHY you should know it. That is why after the discussion on ions, I played the following pod cast on electrolytes. We will continue to see how this all plays a role in "life" as the chapter goes on!

THEN I gave you an introduction to what we will be discussing over the next two days.  This guy will tell you in about 11 minutes what we are going to discuss and DO in the next couple days!

Take a look!