The big question on everybody’s mind for the last few weeks has been: “What’s the deal with the periodic table?” Or at least, it should have been. Starting today, we kicked of Unit 3: Periodicity. Even though it is one of the shortest and easiest units this year, it is also one of the most important.
Today we eased into things with a veritable deluge of periodic properties! It may seem overwhelming, but the big picture is about to come together.
In (class) period 5, David brought up some good points:
- Why does having more valence electrons make an atom smaller?
- Why does having more valence electrons make it harder to steal electrons?
- Why does having more valence electrons make it easier to add more?
The answer to all of these questions will be revealed in the next two days.
Aim: How is the periodic table organized?
Homework: Post-lab questions from Thursday’s lab. If you don’t have them, make sure you get a makeup copy.