Courses
Teacher-curated, self-paced courses. Looking for a guided sequence through a full topic? See Learning Paths.
3 courses
Energy, Rusting and Mass in Reactions
Chemistry · High School (9–10), General · Energy Changes and Corrosion, Chemical Equations
FreeCh 5 · 3/4
Some reactions make a mixture hot, and some make it cold. Iron left in the rain turns to rust. In this course we look at the energy in reactions, at rusting and rancidity in daily life, and at how to find the mass of a product.
3Lessons10Problems2Python Labs1Question Set1Mock Test
Types of Chemical Reactions
Chemistry · High School (9–10), General · Types of Chemical Reactions
FreeCh 5 · 2/4
Most reactions follow one of a few patterns. Substances join, split up, change places, or swap partners. In this course we learn the patterns, and we learn what oxidation and reduction mean.
3Lessons10Problems2Python Labs1Question Set1Mock Test
Chemical Changes and Equations
Chemistry · High School (9–10), General · Chemical Equations, Types of Chemical Reactions
FreeCh 5 · 1/4
When you burn a candle, or leave a cut apple in the air, a chemical change takes place. In this course we learn how to tell that a reaction has taken place, how to write it as an equation, and how to balance the equation.
3Lessons10Problems2Python Labs1Question Set1Mock Test