Daily Archives: March 30, 2020

Physics – Waves (for 3/30 – 4/3/20)

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PHYSICS: Hey guys! Here’s our discussion on the properties of waves. Remember anything from your earlier 8th grade physical science days? Problems are pretty simple for you, I think. Do you remember the main formula from chemistry? Speed = wavelength x frequency (c = λf).

Easy peasy – and don’t forget the applications!

And while you’re here, click here for the next video – NASA Launchpad: Wave Motion. Since we’re not going to be able to play with slinkies in person, this will be a good replacement!

Chemistry – 2nd IE, Electron Affinity, Ionic Radii & Electronegativity for 3/30 – 4/3/20

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CHEMISTRY: So you’re saying, not only are there atoms that want to get rid of electrons, there are atoms that want to take them? Here’s a picture of chlorine taking an electron from sodium – or sodium giving an electron to chlorine. I’ll let you decide!


Image source http://theorielerenonline.nl/kosher-salt-picture/

Chemistry Atomic Radii & Ionization Energy for 3/30 – 4/3/20

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CHEMISTRY: So what about the reasons for all the properties of the elements you studied last week? Here’s the lecture on the why – the first two periodic trends – atomic radii and ionization energy. Who knew mama ducks could help you understand chemistry!?!


flickr photo by Gerry Balding

Hon Chemistry – Metallic Bonds (for 3/30 – 4/3/20)

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HON CHEMISTRY: Molten iron, wow! Here’s the very short lecture on metallic bonding.

Aren’t you glad there are no structures to draw for metallic bonds?! Make sure you can use the electron sea model to explain the properties of metals. Also be able to compare and contrast all three types of bonds.

Have you made your own Chapter 6 “Stuff to Know Sheet”? Great way to get organized as you get ready for this test!!

Hon Chemistry – Ionic vs. Covalent Bonds (for 3/30 – 4/3/20)

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HON CHEMISTRY: Hey guys, here’s the lecture on the comparisons of ionic and covalent bonds – and WHY! Great stuff for application!

And whatever you do, stay away from bubble baths if you have mortal enemies!


Photo by Daniele Levis Pelusi on Unsplash

Hon Chemistry – Ionic Bonds (for 3/30 – 4/3/20)

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HON CHEMISTRY: Hey guys, here’s the lecture on a different way that atoms come together – ionic bonding.

Keep in mind that when you write ionic bonding, you’re not trying to arrange a single structure like you do with Lewis structures. Instead, you’re writing an equation that shows electrons being lost by one atom and gained by another atom. And make sure you put the dots in the right order!

Isn’t this a beautiful crystal of copper sulfate pentahydrate? Since we’ve been talking about crystal lattice structures, I thought you might like to see something different than salt!