(0) excited element (d) catalyst
STUDY QUESTIONS
1. (a) What is a symbol?
(b) What qualitative and quantitative information
is conveyed by a symbol?
2. (a) What do you understand by the term chemical
formula?
(b) What qualitative information is given by the
formula HCI?
3. (a) What do you understand by the term variable
valency?
(b) How are the elements having variable valency
named?
4. Write the chemical formulae of the following
pounds.
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Answer:
.
a thing that represents or stands for something else, especially a material object representing something abstract.
"the limousine was another symbol of his wealth and authority"
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