What I Know Choose the letter of the best answer Write your answer on a separate sheet of paper.
1. The figure below represents the arrangement of particles in a substance. What kind of substance is this?
A. Ionic compound
B. Metallic compound
C. Covalent compound
D. None of these

2 Which is a property of ionic compound? A. soft and flexible
B. crystal lattice structure
C. liquid or gascous state at room temperature
D. does not conduct clectncity both in solid and melted form

3. Which is NOT a property of covalent compound?
A. It has low melting point
B. It exists in a stable crystalline structure. C. It does not exhibit any electrical conductivity.
D. It is usually solid at normal temperature and pressure.

4. Which gives the best explanation of why a solid ionic compound DOES NOT conduct electricity?
A. Solid ionic compounds do not have ions.
B. Solid ionic compounds are not soluble in water.
C. Solid ionic compounds have ions which are free to move.
D. Solid ionic compounds have ions, but these ions are not free to move

5. Which substance conducts electricity when dissolved in water? -
A. gasoline C. sugar
B. paraffin wax D. monosodium glutamate

6. Which of the following statements BEST explains the high solubility of sodium chloride (NaCl) in water?
A. Th-ions are free to move.
B. There are positive and negative ions present in the substance.
c. Sodium chloride break apart into molecules, not an individual atom when dissolve in water.
D. The positive and negative ions are attracted to different regions of the polar water molecules





pakisagit Ng maayos plss kung Hindi naman alam is wag nalang sagutan baka mareport kopa​