Wednesday, May 19, 2010

Which of the folowing items is a physical property?

a)the corrosive action of acid rain on granite


b)the odor of spearmint gum


c)the combustion of gasoline


d)the tarnishing of a copper statue


e)none of the above

Which of the folowing items is a physical property?
b)the odor of spearmint gum
Reply:The odor of the gum. All of the rest of the possible answers are types of chemical reactions.
Reply:B.





With A, there is a chemical reaction that takes place between acid and granite that produces another product - corrosion.





With C, combustion causes a chemical reaction between fuels (carbon, hydrogen, sulfur, coal, oil, gas) and oxygen that results in water, carbon dioxide and heat.





With D, there is a chemical reaction between copper and oxygen that causes the tarnish (green color)
Reply:b


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