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In this demonstration a mixture of zinc and sulfur produces an unusual chemical reaction when heated. A brilliant flash of light, followed by hot sparks, a hissing sound and a mushroom-shaped cloud of white smoke are generated.
REAGENTS. powdered sulfur, S (1 g) 8. powdered zinc, Zn (6 g) PREPARATION Place insulating mat and burner into the otherwise empty fume hood. Using a small evaporating basin, weigh out 6 g of zinc and 1 g of sulfur. With a small spatula mix the two powders until the colour of the mixture is uniform.
Short Answer. Step-by-step Solution. Key Concepts. Chapter 3: Problem 143. When powdered zinc is heated with sulfur, a violent reaction occurs, and zinc sulfide forms: Zn (s) + S 8 (s) ZnS (s) [ unbalanced ] Some of the reactants also combine with oxygen in air to form zinc oxide and sulfur dioxide.
Reaction of Zinc and Sulfur. Description: Insertion of red-hot wire into a small pile of powdered zinc and sulfur results in a large puff of yellowish smoke. This demonstration is also available on video and JCE “Chemistry Comes Alive!” vol. 3 CD-Rom. Source: Shakhashiri, B.Z. Chemical Demonstrations: A Handbook for Teachers of Chemistry
15 sty 2019 · Recognize a reaction as an oxidation-reduction reaction. In the course of a chemical reaction between a metal and a nonmetal, electrons are transferred from the metal atoms to the nonmetal atoms. For example, when zinc metal is mixed with sulfur and heated, the compound zinc sulfide is produced.
The reaction between zinc powder and sulfur. A reaction between zinc and sulfur can be used to demonstrate that chemical changes are often accompanied by a large change in energy. Introduction.
Reaction of Zinc and Sulfur. Description: Insertion of red-hot wire into a small pile of powdered zinc and sulfur results in a large puff of yellowish smoke. This demonstration is also available on video and JCE “Chemistry Comes Alive!” vol. 3 CD-Rom. Source: Shakhashiri, B.Z. Chemical Demonstrations: A Handbook for Teachers of Chemistry
