Subject

Chemistry

April 16, 2026 · Beginner

lesson 1.4 – Physical vs Chemical Changes

Lexicon — Chemistry 1.4: Physical vs Chemical Changes Lexicon Chemistry · Tier I · Lesson 1.4 Foundations Chemistry · Lesson 1.4 Physical vs Chemical Changes Properties, Reactions, Conservation of Mass & Evidence of Change In this lesson Overview Physical Changes Chemical Changes Evidence of Chemical Change Conservation of Mass Reaction Types Worked Examples Practice Takeaways […]

April 15, 2026 · Beginner

lesson 1.3 – Pure Substances & Mixtures

Lexicon — Chemistry 1.3: Pure Substances & Mixtures Lexicon Chemistry · Tier I · Lesson 1.3 Foundations Chemistry · Lesson 1.3 Pure Substances & Mixtures Elements, Compounds, Solutions & Separation Techniques In this lesson Classification of Matter Pure Substances Mixtures Comparison Separation Techniques Worked Examples Practice Takeaways 01 Classification of Matter All matter can be […]

April 15, 2026 · Beginner

lesson 1.2 – States of Matter

Lexicon — Chemistry 1.2: States of Matter Lexicon Chemistry · Tier I · Lesson 1.2 Foundations Chemistry · Lesson 1.2 States of Matter Solids, Liquids, Gases, Plasma & Phase Changes In this lesson The Four States Kinetic Theory Phase Changes Heating Curve Temperature & Pressure Worked Examples Practice Takeaways 01 The Four States of Matter […]

April 15, 2026 · Beginner

Lesson 1.1 – What is Chemistry

Lexicon — Chemistry 1.1: What is Chemistry? Lexicon Chemistry · Tier I · Lesson 1.1 Foundations Chemistry · Lesson 1.1 What is Chemistry? Matter, Energy & the Science of Everything In this lesson Defining Chemistry Matter Energy Branches Scientific Method Lab Safety Worked Examples Practice Takeaways 01 Defining Chemistry Chemistry is the branch of science […]

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