HON CHEMISTRY: Hey guys, here’s the lecture on the first periodic trends – atomic radii and ionization energy. You made some great connections today!

Don’t forget the element videos at periodicvideos.com. As you begin to study and review the properties and uses of the elements, it would be a really great idea for you go back and view hydrogen, potassium, mercury, copper, arsenic, phosphorus, and chlorine. And you might just learn something along the way! You can view the videos on these and all of the elements on this cool website, periodicvideos.com. Just click on the elements, it’d be a great review as you start to prepare for the test. Wait – did I say test?!?

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