Direction: Choose the letter of the correct answer.
1. Which of the following compound will conduct electricity when combined with water? a. oil
b. sugar
C. sodium fluoride
d. wax
2. Which among the statements below is TRUE about salt?
a. Salt readily reacts with other substances.
b. Solid sodium chloride does not conduct electricity.
c. Sodium melts to form a liquid when it is heated above 98°C.
d. When salt is dissolved in water, the solution conducts electricity.
3. Which compound has low melting point?
a, ionic
b. metallic
c. non polar covalent
d. polar covalent
4. Which compound dissolved in polar substance?
a. ionic
b. covalent
c. metallic
d. non polar
5. All of the following are physical properties of covalent compound EXCEPT?
a. soft and brittle
b. often now soluble in water
c. ability to conducts electricity
d. low melting and boiling point​