visitors this year: 94 Rates: marble and acid Apparatus Clamps, bosses, & stands, marble pieces (large, medium and small sizes), 1M hydrochloric acid HCl, flask, bung, delivery tube, a good gas syringe. Interface, position...
visitors this year: 544 Rates: Thiosulfate and acid Sodium thiosulfate and acid react to form a precipitate. The light sensor can be used, like a colorimeter, to monitor the rate of the reaction. In...
visitors this year: 150 Measuring the appearance of cloudy sulfur when we mix acid and sodium thiosulfate is a popular science teaching activity. We can change the temperature or concentration of the reagents, and...
visitors this year: 279 If you were a chemical manufacturer you would certainly be interested in finding ways to increase the rate of production. One way is to do the reaction at a higher...
visitors this year: 113 Hydrochloric acid and marble (CaCO3) react to form carbon dioxide gas. The gas can be captured and measured using a gas syringe. A position sensor can be attached to the...
visitors this year: 575 Plaster of Paris is white powder you mix with water and pour into a mould. You can make models with it while hospitals use it on broken limbs. When you...
visitors this year: 231 A colorimeter for the reaction of acid and thiosulfate – rates of reaction The reaction of acid with thiosulfate produces a precipitate in a beaker, and we normally measured how...
visitors this year: 384 what affects the rate of reaction? A chemical reaction can be made to go fast or slow. In this activity you will try to measure how a chemical reaction is...
visitors this year: 48 When quicklime is mixed with water an exothermic reaction takes place. A temperature sensor can collect information about the heat generated over time. Other things being equal, this reaction might...
rogerfrost.com is a compendium of ideas for using technology with sciencey questions in mind. Started in 1995 to offer ideas to school science teachers, Roger Frost expanded the coverage to home automation, gadgets and sensors to measure, or understand, what’s going on around him.
To find things the search box, the menu and the keywords work perfectly (and we’re totally free as in advert free).
Roger Frost has been writing about technology since 1988 and this web includes articles; radio interviews with scientists and tutorials to use technology at home and the classroom.
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