Chemistry Lab Skills Explained: 135 Flashcards on Safety, Equipment and Stoichiometry

Chemistry punishes two kinds of mistake: the ones that hurt you, and the ones that ruin your numbers. Lab Skills: Safety, Equipment & Stoichiometry on Flip It (deck code RQ2875, 135 cards) drills both halves — the bench rules that keep acid off your face, and the mole arithmetic that decides whether your calculation earns the marks.

What the 135 cards actually contain

• Equipment and analysis: laboratory glassware, reagent bottles, fume hoods, Bunsen burners, blast furnaces, calibration, spectroscopy, infrared (IR), nuclear magnetic resonance (NMR), mass spectrometry, crystallography, chromatography, distillation, crystallization, evaporation, solvent extraction.
• Safety and PPE: lab coats, safety goggles, nitrile and neoprene gloves, safety showers, eyewash stations, ventilation, MSDS sheets, flash points, flammable solvent storage, Class A/B/C fire extinguishers, spill kits, broken-glass disposal, contamination and cross-contamination, Good Laboratory Practice.
• Stoichiometry: conservation of mass, law of definite proportions, law of multiple proportions, stoichiometric coefficients and stoichiometric numbers, molar mass, the Avogadro constant, molar ratios, limiting reagent, excess reactant, theoretical and actual yield, percent yield, extent of reaction, the stoichiometry matrix.
• Gas and combustion stoichiometry: STP, the ideal gas law, the constant R, molar mass from gas density, complete vs incomplete combustion, overstoichiometric burning, and air-to-fuel ratios for gasoline, natural gas, propane and hydrogen.
• Worked equations: methane, propane, ethanol, hydrogen and gasoline combustion, the thermite reaction, copper with silver nitrate, roasting lead(II) sulfide, iron(III) chloride with hydrogen sulfide, Friedel-Crafts methylation.

Eight cards from the deck

Two tactics that make this deck stick

Never compare masses — cross the mole bridge. Almost every stoichiometry card in the deck is one step of the same chain: grams to moles (divide by molar mass), moles to moles (the coefficients from the balanced equation), moles back to grams. Review the cards in that order rather than in deck order, and the molar-ratio, limiting-reagent and percent-yield cards stop being separate facts. For the limiting reagent specifically, divide each reactant's moles by its own coefficient — the smallest quotient wins.

Learn the safety cards as scenarios, not definitions. Don't memorise "eyewash station"; run the emergency. Acid in the eyes: eyewash, fifteen minutes, medical attention. Solvent fire: Class B extinguisher. Broken flask: dustpan and brush, sharps container. Diluting sulfuric acid: acid into water, never the reverse. The deck's questions are already phrased as "what should you do if…", so rehearsing the answer out loud is exactly the recall you need at the bench.

The air-to-fuel numbers deserve one dedicated pass on their own: 14.7:1 gasoline, 14.5:1 natural gas, 15.67:1 propane, 34.3:1 hydrogen. They are close enough to blur together and are the cards most often missed.

Get the deck

Sign in at flip-it.app and open Lab Skills: Safety, Equipment & Stoichiometry (deck code RQ2875) from the library.