IB Chemistry HL/SL

Full IB Chemistry curriculum coverage including stoichiometry, atomic theory, periodicity, bonding, energetics, kinetics, equilibrium, acids/bases, redox, and organic chemistry.

Topics Covered

Stoichiometry

Atomic Theory

Periodicity

Chemical Bonding

Energetics

Kinetics

Equilibrium

Acids & Bases

Organic Chemistry

What you get

Full topic-by-topic curriculum coverage

Spaced-repetition flashcards for every topic

Multiple-choice quizzes with explanations

Term-matching vocabulary games

HL and SL content clearly labelled

Exam technique tips throughout

Key terms & definitions bank

12 months of access from purchase

Free Sample

Structure 1 — Particulate Nature of Matter & The Mole

THE BIG PICTURE. Structure 1 covers the PARTICULATE NATURE OF MATTER — what stuff is made of and how to count it. Sub-topics: S1.1 Introduction to the particulate nature, S1.2 The nuclear atom, S1.3 Electron configurations, S1.4 Counting particles by mass (the mole), S1.5 Ideal gases. Together these give you the language of chemistry — atoms, isotopes, electrons, moles, gases — and the math to handle quantitative problems.

Sample Flashcards

A sample of neon has two isotopes: $^{20} Ne$ (90.5% abundance) and $^{22} Ne$ (9.5%). Calculate $A_{r} (Ne)$ .

Use the WEIGHTED AVERAGE formula: $A_{r} = \sum (mass \times fractional abundance)$ $A_{r} = (0.905 \times 20) + (0.095 \times 22)$ $A_{r} = 18.10 + 2.09 = 20.19$ The $A_{r}$ of Ne $\approx 20.2$ on the periodic table. Use FRACTIONAL abundances (decimals), NOT percentages directly.

State the relationship between atomic number, mass number, and neutron number.

$Z$ = ATOMIC NUMBER = number of protons (defines the element). $A$ = MASS NUMBER = protons + neutrons. $N$ = NEUTRON NUMBER = $A - Z$ . For a NEUTRAL atom: number of electrons = $Z$ . For an ION: electrons = $Z$ − charge. Example: $^{56} Fe$ ( $Z = 26$ ): • Protons = 26. • Neutrons = 56 − 26 = 30. • Electrons (neutra…

Sample Key Terms

Atomic Number ( $Z$ )

The number of protons in an atom's nucleus. Defines the element. Identical for all atoms of the same element.

Mass Number ( $A$ )

Total number of protons + neutrons (nucleons) in an atom's nucleus. $A = Z + N$ .

Isotope

Atoms of the same element (same $Z$ ) with different numbers of neutrons (different $A$ ). Same chemical properties; different physical properties.

What's Covered

Structure 1 — Particulate Nature of Matter & The Mole
Structure 2 — Models of Bonding & Structure
Structure 3 — Periodicity & Functional Groups
Reactivity 1 — Energetics & Thermochemistry
Reactivity 2 — Rate of Reaction & Equilibrium
Reactivity 3 — Acids/Bases, Redox & Organic Reactions
Assessment & Internal Assessment
Periodic Table Quiz

8 topics · 77+ flashcards · quizzes & matching games included

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