Heather Lentz
IB DP Biology, IB DP Chemistry, and IB MYP Chemistry lectures! You can also find me on Instagram @lentzlearnsscience
Engineering Tomorrow challenge!
Scientific notation in our calculators
MYP Honors Chem Unit 2 Review Quiz Free response Section V Quantum mechanics
Honors MYP Chemistry Unit 2 Review Quiz #25
IB MYP Honors Chemistry Unit 1 Metric System and Scientific Notation
MYP Honors Chemistry Unit 1 Sig figs and uncertainty
IB Chemistry R2.3 The extent of chemical reactions : equilibrium & Le Chatelier's principle
IB Biology A3.2 Classification and cladistics - AHL
IB Chemistry R1.3 Energy from fuels
IB Chemistry R1.2 Energy cycles in reactions - bond enthalpy
IB Chemistry R1.2 Energy cycles in reactions - Hess's Law
IB Chemistry R1.1 Measuring enthalpy changes
IB Chemistry R3.2 Electron transfer rxns - reduction and oxidation of organic molecules
IB Chemistry Topic S2.4 Models to materials - polymerization of organic molecules
IB Chemistry R3.4 Electron pair sharing reactions in organic molecules
IB Chemistry R3.3 Organic chemistry - electron sharing reactions - radical substitution reactions
IB Biology A3.1 Diversity of organisms
IB Biology D4.1 Natural selection - AHL
IB Biology D4.1 Natural Selection
IB Chemistry Topic Structure 3.2 Functional groups - fractional distillation
IB Biology A4.1 Evolution and speciation - AHL
IB Biology A4.1 Evolution and speciation
IB Chemistry S3.2 Functional groups - organic nomenclature
IB Chemistry Topic R2.1 Atom economy
IB Chemistry R3.1 Proton transfer reactions - acids and bases
IB Chemistry Topic R2.1 How much? The amount of chemical change - Reaction stoichiometry
IB Chemistry S1.5 Ideal gases
IB Chemistry S1.4 Counting particles - concentration
IB Chemistry S1.4 Counting particles - empirical and molecular formulae
IB Chemistry S1.4 Counting particles - the mole - intro to stoichiometry