Physics 5-4-15 Application of Refraction

PHYSICS: Today was the last of the applications of lenses. I love it when you get to see how physics crosses over into other disciplines of science – from physiology the other day with myopia and hyperopia and how lenses can help, to the applications today – how microscopes and telescopes work, and, ever important to know – why is sky blue!

Update on homework: the homework for thin lenses was incorrect. It should be: Pg. 508 – 512; 15 – 26 (Draw 24 – 26 to scale).

Speaking of lasts – LAST chapter test tomorrow!! What should you practice? Application of concepts, ray diagrams with mirrors and refraction through a transparent medium and lenses, and problems. Hey, here’s something to think about… can something really disappear into thin air? How??

Chemistry 5-4-15 The 17 Types of Chemical Reactions

CHEMISTRY: You realize what we did? We finished all 17 types of reactions today! Just to make things easier for you, I’m posting the lessons that have all the types .

Careful when you work tonight’s homework! First – the page numbers on the syllabus may be wrong. Homework is from the end of chapter 8. Next – for all single replacement reactions and reactions involving forming or decomposing oxide, be sure and refer to the Activity Series. Yes, you will get to memorize it!

Are you working on memorizing all 17_Chemical_reactions for Thursday – and forever?! But don’t just memorize them. Make sure you can apply them as well. When you start to work any equation, first determine what type of reaction it is, then figure out what rule applies and follow it to determine the products. I believe in you! You can do it!! (and yes, I realize I am repeating myself, but I do and you can!)

Synthesis Reactions

HON CHEMISTRY 3-21-14 Synthesis Reactions from Tammy Skinner on Vimeo.

Decomposition & Single Replacement Reactions

HON CHEMISTRY 3-24-14 Decomposition & Single Replacement Reactions from Tammy Skinner on Vimeo.

flickr photo by bobtravis

Double Replacement & Combustion Reactions

HON CHEMISTRY 3-25-14 Double Replacement & Combustion Reactions from Tammy Skinner on Vimeo.