(Feb 5) In support of Handout #54, this video explains what information can be found in an element's rectangle on the periodic table. There is also a dire warning against misguided capitalization.
Also, how do we calculate an element's neutrons?
(Feb 5) In support of Handout #54, this video explains the concept of electron shells within an atom's electron cloud. This also shows how we calculated the maximum number of electrons each shell can hold.
(Feb 10-14) In Handout #51, you were asked to research the eight element classifications within the periodic table.
Video #5 - Alkali Metals Meet Water
(Feb 10-14): This YouTube video was shown in class to introduce students to chemistry and alkali metals. It was also shown to reinforce the concept that elements in the same column (group) tend to behave alike. Not exactly alike, but they do have things in common.
Video #6 - Alkali Metals to Transition Metals
(Feb 10-14): From metals that explode in water to metals that don't.
Video #7: Post Transition Metals & Metalloids
(Feb 10-14) So, you don't wrap food with tin foil. You say 'tin' foil because grandma said it, your folks said it and now . . . Well, it's not your fault. It's called aluminum foil. Also, what is the most important metalloid? Your technology is driven by element #14, silicon.
Video #8: Other Non-metals
(Feb 10-14) These are us! 98% of the atoms in our bodies (and most living things) are the other non-metals: C, H, O, N, P, S. We are considered carbon-based life forms, not because it is our most abundant atom (H is first, followed by O). Carbon is the great unifier -- it is the atom that allows large molecules such as proteins, enzymes and DNA to be put together.
Video #9: Halogens & Noble Gases
(Feb 10-14) Rounding out the final two classifications are the halogens and noble gases. Halogens have 7 valence electrons and are a natural match with the alkali metals (7 + 1 = 8). In Group we find the noble gases. With the exception of He, noble gases have 8 valence electrons and will not bond with any atoms, even themselves.
Video #10: Electron Configuration #1
(Feb 18-19) In support of Handout #56.
Each of you was asked to draw the electrons (in their shells) for atom #19, potassium. Since potassium has 19 protons (+'s), it has 19 electrons (-'s). You all drew it incorrectly (2,8,9). Perfect! That's what we were hoping.
Video #11: Electron Configuration #2
(Feb 19-20) In support of Handout #56.
This was recorded last year, so Mr. Wright refers to Handout #60, not this year's #56.
Video #12: Electron Configuration #3
(Feb 19-20) In support of Handout #56, we begin slowly with the s, p, d & f madness. You will all get this. OK?
Potassium is on the 4th row of the periodic table. This means that it has 4 electron shells.
Again, this was recorded last year, so Mr. Wright refers to Handout #60, not this year's #56.
Video #13: Electron Configuration #4
(Feb 19-20) In support of Handout #57.
Let's talk about and configure elements on the first two rows of the periodic table.
This was recorded last year, so Mr. Wright refers to Handout #61, not this year's #57.
Video #14: Electron Configuration #5
(Feb 19-20) In support of Handout #57.
Neon to Argon. Plus, where do we go after ending the 3rd column?
Video #15: Electron Configuration #6
(Feb 19-20) In support of Handout #57.
This was recorded last year, so Mr. Wright refers to Handout #61, not this year's #57.
Video #16: Noble Gas Notation
OK, here's the shortcut. Why weren't you shown this before writing a few of those really long configurations? Geez. Stop whining. Kids these days! When I was your age . . .
Video #17: Configuring Iridium (#77)
So, this is the long way for iridium. Why iridium? It was of great importance in developing the how widely accepted theory as to what took out the dinosaurs?
Video #18: Ink & Salt Water Percentages
Video #18: Getting Water Busy