CHEMistry: Unit 2
Atomic Structure & Counting Particles
Unit 2 Student Advice:
Guys, live it up. Chemistry is tough. There's no sugar coating it. But please try to have fun. Ms. Lemens does a freaking amazing job of keeping class a fun place to be and that's crazy for it being a science class. Last year, you dissected earthworms, learned about the body parts of a frog, heck, you even got through mitosis. I am so proud of each and every one of you for staying strong and pushing through. Good luck this year, and remember, 6.02x10^23 (you'll thank me later) :) (KS, class of '23)
Be prepared because it is very difficult (in my opinion) and it’s a lot of math and it’s really important to listen and ask questions so you can get a good solid understanding. (EJ, class of '22)
Learning Targets
I can describe the role of the mole in counting particles and apply it as a conversion factor in dimensional analysis.
I can explain the development of atomic theory across history including the properties and discovery of subatomic particles.
I can calculate the percent composition and describe its relevance in isotopes.
I can calculate the number of protons, electrons, and neutrons in an atom given limited information.
Practice Packet
Textbook References
Chapter 4
Chapter 5
(pg 126-130 only)
TOPIC 1: Atomic Theory
Worksheets, Resources, & Slides
Topic 2: Atomic Structure
Worksheets, Resources, & Slides
Topic 3: Isotopes, % Abundance, & AAM
Topic 4: Ions
Topic 5: The Mole
Review & Additional Practice
Helpful Videos