Thank you to those who contribute to our ongoing cycle of improvement. Top contributors:Joan Yoon - Trenton, NJ
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My suggestion would be to just teach them each piece independently. So -- you taught them particle - mole, mass - mole, and volume - mole conversion in the mole unit. In stoichiometry just start by teaching them mole - mole conversions. There is a nice flow chart that gives a bit of a road map for how to proceed from there for more complex calculations. Just take it one small step at a time and make sure you're doing formative assessment before moving on
Are there lessons on measuring mass and volume or calculating density?
No, not explicitly as you might find in the beginning of a traditional chemistry course. There is a discussion of density in intermolecular forces unit in the section on states of matter and physical and chemical properties and density calculations are done in the gases unit.