Welcome to the Quiz!
This quiz contains 29 questions from a mix of 1 subtopics.
Which type of crystal structure does sodium chloride have?
simple molecular
metallic
giant covalent
ionic
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What type of bonding is present in Buckminsterfullerene?
hydrogen
ionic
metallic
covalent
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Which substance has the highest melting point?
iodine
graphite
magneisum oxide
calcium
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What is the strongest type of intermolecular force in H2O?
covalent bonds
induced dipole-dipole forces
permanent dipole-dipole forces
hydrogen bonds
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Metals conduct electricity due to the sea of electrons.
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Ionic compounds have high melting points due to the strong forces of attraction between oppositely-charged .
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Which state of matter has particles with the lowest kinetic energy?
solid
gas
liquid
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What type of bonding is present in diamond?
ionic
hydrogen
metallic
covalent
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Why graphite can conduct electricity?
delocalised electrons within layers can carry electrical charge
covalent bonds can carry electrical charge
carbon atoms can carry electrical charge
ions within layers can carry electrical charge
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What do giant covalent crystals consist of?
a network of atoms covalently bonded together
small molecules held together by weak intermolecular forces
positive ions embedded in a sea of delocalised electrons
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What is the strongest type of intermolecular force in CHCl3?
covalent
induced dipole-dipole
permanent dipole-dipole
hydrogen
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What is the strongest type intermolecular force in CH4?
covalent
induced dipole-dipole
permanent dipole-dipole
hydrogen
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Which of the following is true about ionic compounds?
they are soluble in non-polar solvents.
they conduct electricity when molten or in solution.
they have low melting and boiling points.
they are good electrical conductors in the solid state.
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Which of the following properties is characteristic of simple molecular structures?
solubility depends on the polarity of the molecule
good electrical conductivity
atoms are held together by strong covalent bonds throughout the structure
high melting and boiling points
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What type of bonding is responsible for the unique properties of water, such as its high surface tension and higher-than-expected boiling point?
hydrogen bonding
metallic bonding
ionic bonding
covalent bonding
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What is the reason for the very high melting and boiling points of giant covalent structures?
many strong covalent bonds throughout the structure
presence of delocalised electrons
strong electrostatic forces between oppositely charged ions
weak intermolecular forces between molecules
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Which of the following substances is an exception to the general electrical conductivity behavior of its crystal type?
sodium chloride (ionic)
water (simple molecular)
copper (metallic)
graphite (giant covalent)
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Which of the following is responsible for the electrical conductivity in metals?
polar molecules
delocalised electrons
oppositely charged ions
strong covalent bonds
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What is the reason for the insolubility of giant covalent structures in water?
weak intermolecular forces
delocalised electrons
presence of charged ions
strong covalent bonds preventing interaction with water molecules
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What type of crystal lattice structure is composed of metal cations surrounded by a sea of delocalised electrons?
giant covalent
simple molecular
ionic
metallic
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Which of the following crystal structures is composed of atoms held together by strong covalent bonds throughout the structure?
giant covalent
ionic
simple molecular
metallic
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What is the reason for the low boiling points of simple molecular substances?
strong covalent bonds between atoms
weak intermolecular forces between molecules
weak covalent bonds between atoms
strong intermolecular forces between molecules
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Explain why ionic compounds have high melting and boiling points.
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What type of crystal structure has delocalised electrons?
ionic
simple molecular
metallic
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Why can metals conduct electricity?
molecules can flow through the structure and carry electrical charge
metal ions can flow through the structure and carry electrical charge
delocalised electrons can flow through the structure and carry electrical charge
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Predict the most likely crystal structure of a substance which has a melting point of 660°C and which conducts electricity in the solid and liquid states.
ionic
simple molecular
metallic
giant covalent
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What type of particle makes up giant covalent crystals?
atoms
molecules
ions
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Why do ionic substances have high melting and boiling points?
a lot of energy is needed to overcome the strong covalent bonds between atoms
a lot of energy is needed to overcome the strong electrostatic attraction between metal cations and delocalised electrons
a lot of energy is needed to overcome the strong electrostatic attraction between oppositely charged ions
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Simple molecular substances have melting and boiling points because the weak forces require little energy to overcome.
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