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Description
Record: 964
Watson Crick's Virtual Titration. An introduction to acid-base titration. Applet gives 3 known acids and two unknowns to work with. Very simple to use! Good review for acid-base titration.

Record: 1182
4 labels have fallen off 4 bottles The bottles contain solutions that can be mixed together to identify which label goes on which bottle using information from a solubility table. This dropper-bottle lab exercise involves logical reasoning and a knowledge of solubility tables.

Record: 1209
This record is a collection of many types of test questions on Solutions and Solubility.

Record: 1382
A teacher resource showing an effective way to teach stoichiometry calculations to all students. A "road map" keeps students organized and shows them which calculation comes next in the sequence.Students with limited math sense quickly become able to understand even limiting reagent calculations.
Record: 1393
A large plastic diffraction grating can be easily attached to an overhead projector to project the visible spectrum of the lamp. Beakers with indicator dyes can be placed on the projector stage to show changes in the spectrum as the dyes change colour. Good for relating colour theory to absorption and transmission media. Also good for introducing the invisible parts of the EM spectrum (i.e.IR&UV)

Record: 1394
This attention-getting demonstration is easy to prepare and illustrates the difference between absorption of coloured light and fluorescence of coloured light. It can be used as an attention-getter in Grade 9 Physics strand.

Record: 1409
Turning Copper to Gold! – A Metal Solution Demonstration. This demonstration is a memorable introduction to teaching about different kinds of mixtures: gas/gas mixtures like the air in the room, gas/liquid mixtures like carbonated drinks and solid/solid mixtures like that in jewelry. First published in the January 2006 Crucible
Record: 1418
SCH3U: Solutions Unit Assignment “The Great Chemical Spill” A tanker truck loaded with an acid solution was driving along Riverside Drive when the driver lost control on a patch of black ice. The truck flipped and the acid began leaking out of the ruptured tank. The fire department was able to contain all the liquid before it spilled into the nearby Rideau River, but they were worried that their container would eventually break. You are the leader of the Hazmat (Hazardous Materials) Team sent to prevent any environmental damage and clean up the spill. Answer the questions listed below in full sentences. Include all calculations as necessary. First published in the June 2006 Crucible
Record: 1426
Mentos Fountain Demonstration. Mentos mints are used to unleash the dissolved carbon dioxide in a 2 L bottle of carbonated pop, producing a 2-3 m fountain. See also "The Root-Beer Fountain" VL record #1421 First published in the October 2006 Crucible
Record: 1475
From the Lab Bench: Visualizing the pH scale - This demonstration uses a highly visual analogy to help students appreciate that small changes in the pH of a solution represent significant changes in the solution’s properties. First published in the Sept. 2007 Crucible
Record: 1519
Mini-Labs: Making Better Use of Class Time. Big demands from the curriculum, not enough time. So what's a teacher to do? My suggestion is to switch as much practical work as possible to short, single concept-centred labs which I call Mini-labs. By Michael Jansen. First published in the March Crucible 2008
Record: 1591
Add different salts to water, then watch them dissolve and achieve a dynamic equilibrium with solid precipitate. Compare the number of ions in solution for highly soluble NaCl to other slightly soluble salts. Relate the charges on ions to the number of ions in the formula of a salt. Calculate Ksp values.