Welcome to the Quiz!
This quiz contains 16 questions from a mix of 1 subtopics.
Which type of crystal structure does sodium chloride have?
metallic
giant covalent
ionic
simple molecular
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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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What type of bonding is present in diamond?
ionic
covalent
metallic
hydrogen
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Why graphite can conduct electricity?
carbon atoms can carry electrical charge
covalent bonds can carry electrical charge
ions within layers can carry electrical charge
delocalised electrons within layers can carry electrical charge
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What do giant covalent crystals consist of?
positive ions embedded in a sea of delocalised electrons
small molecules held together by weak intermolecular forces
a network of atoms covalently bonded together
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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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What type of crystal structure has delocalised electrons?
simple molecular
ionic
metallic
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Why can metals conduct electricity?
molecules can flow through the structure and carry electrical charge
delocalised electrons can flow through the structure and carry electrical charge
metal ions 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
metallic
giant covalent
simple molecular
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What type of particle makes up giant covalent crystals?
atoms
ions
molecules
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Why do ionic substances have high melting and boiling points?
a lot of energy is needed to overcome the strong electrostatic attraction between oppositely charged ions
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
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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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