Tagged: rate of reaction

measuring visible change in liquids

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 see whether the mixture...

effect of surface area on a rate of reaction

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 syringe to record the...

colorimeter for acid reacting with thiosulfate

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 quickly a cross drawn...

rates of reaction

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 affected by temperature. When...

exothermic reactions

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 be used in a...