Topical Questions
These questions are keyed to the major topics in the chapter. Usually a question that is answered at the back of this book is paired with a similar one that is not.
In each case, identify the underlined property as a physical or chemical property. Give a reason for your choice.
(a) The normal color of the element bromine is red orange.
(b) Iron is transformed into rust in the presence of air and water.
(c) Dynamite can explode.
(d) Aluminum metal, the shiny “foil” you use in the kitchen, melts at 660 °C.
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