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2 courses
Laws, Atoms and the Mole
Chemistry · High School (11–12) · Laws of Chemical Combination, The Mole Concept, Molecules, Ions and Formulae
FreeCh 1 · 2/4
Five laws of chemical combination led Dalton to the atom. Use them, find atomic and molecular masses, and meet the mole: the chemist's way of counting particles by weighing them.
3Lessons11Problems2Python Labs1Question Set1Mock Test
Laws of Chemical Combination and Atoms
Chemistry · High School (9–10), General · Laws of Chemical Combination
FreeCh 3 · 1/4
Two centuries ago, scientists weighed substances before and after a reaction, and they found rules that never fail. Here we learn those two laws, and the idea of the atom that Dalton built from them. We also learn how heavy an atom is, in a unit made for it.
3Lessons10Problems2Python Labs1Question Set1Mock Test