93 articles
Lab Techniques & Analysis
Titration, chromatography, spectroscopy, lab safety and how chemists identify substances.
Teaching Spectroscopy Interpretation
Strategies for teaching students to interpret IR, mass and NMR spectra: sequencing the techniques, a consistent problem-solving routine, building pattern recognition, using real spectra and databases, card-sort and jigsaw activities, tackling misconceptions, and assessing reasoning rather than recall.
Glassware Tolerances and Uncertainty
What the markings on volumetric glassware mean: Class A and Class B tolerances, TD and TC, calibration temperature, typical tolerance values for pipettes, burettes and flasks, and how to use them in uncertainty calculations.
X-ray Fluorescence: Non-destructive Elemental Analysis
How X-ray fluorescence (XRF) identifies elements by knocking out inner electrons and measuring the X-rays emitted, energy-dispersive vs wavelength-dispersive XRF, handheld analysers, and uses in art, archaeology, recycling and mining.