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WorksheetsStructure of bonding in covalent substances
Total questions: 10
Worksheet time: 6mins
A substance that is a poor conductor of electricity in all states and has low melting and boiling points is most likely a/an
ionic compound
metal
covalent substance
A compound is made of two nonmetals. It is
ionic
metallic
covalent
Simple molecular molecules generally have
low melting and boiling points
high melting and boiling points
ionic bonds
metallic bonds
Giant covalent structure: A large ________ of non-metal atoms bonded together to form a rigid structure
Lettuce
Lashed
Luminous
Lattice
Which of these has a covalent covalent structure?
Hydrogen Gas
Carbon as Diamond
Solid Sulfur
Bromine Solution
Which group of covalent substances all exists as simple molecular structures?
chlorine gas, water, graphite
bromine, iodine, nitrogen
diamond, graphite, silicon dioxide
oxygen, hydrogen, beryllium
Nitrogen dioxide has a low melting point of 21oC because
strong covalent bonds are overcome during melting
weak covalent bonds are overcome during melting
strong Van der Waals' forces are overcome during melting
weak Van der Waals' forces are overcome during melting
Graphite has a high melting point of 3600oC because
numerous strong covalent bonds are overcome during melting
numerous weak covalent bonds are overcome during melting
extensive strong Van der Waals' forces are overcome during melting
extensive weak Van der Waals' forces are overcome during melting
Which mobile charged carrier enables graphite to conduct electricity in its solid state? Answer in small letters please.
(a)
