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Chemical characteristic properties. Reaction to litmus paper. Can identify if a substance is acidic or basic . . Acid. Base. Reaction to cobalt chloride paper. Turns pink in the presence of water. no water. with water. Reaction to limewater. Turns Cloudy in the presence of CO 2.
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Reaction to litmus paper • Can identify if a substance is acidic or basic. Acid Base
Reaction to cobalt chloride paper • Turns pink in the presence of water. no water with water
Reaction to limewater • Turns Cloudy in the presence of CO2
Reaction to glowing splint • Splint reignites in the presence of oxygen A pair of bellows uses the same principal to reignite a fire
Reaction to burning splint • An explosion will occur in the presence of hydrogen. Hindenburg in 1937 http://www.youtube.com/watch?v=1PLH4H7Mjl8
Reaction to an open flame The color of the flame may indicate the presence of certain substances. Ba Na K http://www.youtube.com/watch?v=PVj8aQwuUMo
Homework • Workbook pages 17 and 18 (# 1 to 6)