2. What are the two classification of pure substance?
a. elements and compound
b. atoms and molecule
c. homogeneous and heterogeneous d. metal and non-metal
3. What is the chemical symbol for the element TIN?
a. Tn
b. Sn
c. T
d. Si
a. elements and compound
b. atoms and molecule
c. homogeneous and heterogeneous d. metal and non-metal
3. What is the chemical symbol for the element TIN?
a. Tn
b. Sn
c. T
d. Si
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Answer:
2. A. elements and compound
compounds
compoundsPure substances may be divided into two classes: elements and compounds. Pure substances that cannot be broken down into simpler substances by chemical changes are called elements.
3. B. Sn