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A bond formed by the transfer of electrons is called:

• 1 Covalent
• 2 Metallic
• 3 Ionic
• 4 Hydrogen

A bond formed by sharing of electrons is called:

• 1 Covalent
• 2 Ionic
• 3 Dative only
• 4 Electrovalent

Which of these is an ionic compound?

• 1 Water
• 2 Methane
• 3 Carbon dioxide
• 4 Sodium chloride

How many electrons are shared in the double bond of O2?

• 1 6
• 2 1
• 3 2
• 4 4

Ionic compounds usually have:

• 1 Gas state at room temperature
• 2 High melting points
• 3 Low melting points
• 4 No melting point

A compound that conducts electricity when molten is most likely:

• 1 A noble gas
• 2 Ionic
• 3 A non-polar liquid
• 4 Covalent

Water, H2O, has covalent bonds because the atoms:

• 1 Transfer electrons
• 2 Lose neutrons
• 3 Gain protons
• 4 Share electrons

The number of valence electrons in chlorine is:

• 1 1
• 2 8
• 3 2
• 4 7

Which compound has an ionic bond?

• 1 CO2
• 2 NaCl
• 3 H2O
• 4 CH4

A molecule of nitrogen, N2, has a:

• 1 Double bond
• 2 Ionic bond
• 3 Triple bond
• 4 Single bond