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13 questions
Which compound has high melting point?
Ionic
Covalent
Which substance soluble in organic solvent?
Covalent
Ionic
Which of the following can conduct electricity in solid state?
metals
covalent compound
ionic compound
Which compound can conduct electricity in molten and aqueous state?
Ionic compound
Covalent compound
Ions cannot move freely because they are tied by strong
............................
electrostatic force
Van der Waals
Molecules in covalent compounds cannot conduct electricity because they are .....................
charged
neutral
cannot move
When dissolved in water, water molecules help to overcome electrostatic attraction force between ions and break down the lattice structure of the solid compound. As a result, ions can move freely in water.
True
False
Organic solvents can overcome electrostatic forces between ions in a solid ionic compound. So, ionic compounds are soluble in organic solvent
True
False
Why ionic compounds are not volatile? Because they ...................
have high melting and boiling points
have low melting and boiling points
Giant molecules have a ................ structure and exist as .....................
large, solid
small, liquid
The chemical bond that exist in giant molecules
strong covalent bond
strong covalent and Van der Waals
electrostatic force
Example of giant molecule
carbon dioxide
Silicon dioxide
Example of simple molecule
Carbon dioxide
Silicon dioxide
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