AP CHEMISTRY
WEEK 1
Study Package
, AP CHEMISTRY
WEEK 1 STUDY PACKAGE
Message to Lumist AP Campers
Hi Lumist AP Campers and welcome to the first week of AP Chemistry!
This week’s unit is Atomic Structure and Properties. We will start off by discussing
quantitative chemistry such as Avogadro’s number and the mole concept. Many of you
are probably familiar with the Bohr-Rutherford model of the atom from earlier science
classes. This unit will introduce another model known as the quantum mechanical
model of the model of the atom. We will also cover periodic trends and reactivity. There
are some key insights or tips to help you avoid common misunderstandings and
remember key concepts.
The end of this guide includes questions to reinforce your studying and a bonus
question for students looking for a challenge.
Good luck!
Chapter 1 Overview: Atomic Structure & Properties
On the exam: 7% - 9% of the exam score
1.1 Moles and Molar Mass
Definitions: mole, atomic mass unit (a.m.u), molar mass, and isotopes
Balancing chemical equations and finding the limiting reagent (L.R) of a rxn
Use moles and Avogadro’s number to find properties such as grams, molecules, and
moles of the products in a given rxn
Equations:
𝑚𝑎𝑠𝑠 (𝑔)
𝑛= 𝑔 𝑁𝐴 = 6.022 𝑥 1023 𝑚𝑜𝑙−1
𝑀𝑀( )
𝑚𝑜𝑙
1.2 Mass Spectroscopy
Understand how average atomic mass can be found from the abundancy of isotopes
1.3 Pure Substances
Define pure subtances: elements, ions, compounds (ex. H2O)
Empirical formulas of compounds
02
WEEK 1
Study Package
, AP CHEMISTRY
WEEK 1 STUDY PACKAGE
Message to Lumist AP Campers
Hi Lumist AP Campers and welcome to the first week of AP Chemistry!
This week’s unit is Atomic Structure and Properties. We will start off by discussing
quantitative chemistry such as Avogadro’s number and the mole concept. Many of you
are probably familiar with the Bohr-Rutherford model of the atom from earlier science
classes. This unit will introduce another model known as the quantum mechanical
model of the model of the atom. We will also cover periodic trends and reactivity. There
are some key insights or tips to help you avoid common misunderstandings and
remember key concepts.
The end of this guide includes questions to reinforce your studying and a bonus
question for students looking for a challenge.
Good luck!
Chapter 1 Overview: Atomic Structure & Properties
On the exam: 7% - 9% of the exam score
1.1 Moles and Molar Mass
Definitions: mole, atomic mass unit (a.m.u), molar mass, and isotopes
Balancing chemical equations and finding the limiting reagent (L.R) of a rxn
Use moles and Avogadro’s number to find properties such as grams, molecules, and
moles of the products in a given rxn
Equations:
𝑚𝑎𝑠𝑠 (𝑔)
𝑛= 𝑔 𝑁𝐴 = 6.022 𝑥 1023 𝑚𝑜𝑙−1
𝑀𝑀( )
𝑚𝑜𝑙
1.2 Mass Spectroscopy
Understand how average atomic mass can be found from the abundancy of isotopes
1.3 Pure Substances
Define pure subtances: elements, ions, compounds (ex. H2O)
Empirical formulas of compounds
02
