6. Ethanolc acid (Vinegar) la represented by the formula CH3COOH. Which of the following represen
the elements it contains?
a. Carbon, hydrogen and oxygen
B. Carbon and water
C. Copper, hydrogen and oxygen
D. Carbon, water and oxygen
7 Mercury, a typical metal, is a silvery liquid at room temperature. What can we Inter about mercury
from the above statement?
a. It has a high density
B.It has a low boiling point
C.It has a low melting point
D.It is a good conductor of electricity
8. Which of the following is a pure compound?
a. Ethanoic acid
b. Petroleum
c Pewter
d. Tap water
9. A substance Z has a high melting point, conducta electricity only when molten and is soluble in
water. What could be Z?
a. Diamond
b. iron
c. Potassium bromide
d. Silicon dioxide
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