2. Structure and bonding can be used to explain many of the properties of substances - CIE - A-Level Chemistry - Question 2 - 2017 - Paper 1
Question 2
2. Structure and bonding can be used to explain many of the properties of substances.
(a) Copper, ice, silicon(IV) oxide, iodine and sodium chloride are all crystal... show full transcript
Worked Solution & Example Answer:2. Structure and bonding can be used to explain many of the properties of substances - CIE - A-Level Chemistry - Question 2 - 2017 - Paper 1
Step 1
Complete the table with the name of a type of bonding and type of lattice structure for copper
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Answer
Copper exhibits metallic bonding due to the sea of delocalized electrons. The type of lattice structure is a giant metallic lattice.
Step 2
Complete the table with the name of a type of bonding and type of lattice structure for ice
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Answer
Ice has covalent bonding with hydrogen bonds between molecules. The type of lattice structure is a simple molecular lattice.
Step 3
Complete the table with the name of a type of bonding and type of lattice structure for silicon(IV) oxide
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Answer
Silicon(IV) oxide exhibits covalent bonding. The type of lattice structure is a giant covalent or macromolecular lattice.
Step 4
Complete the table with the name of a type of bonding and type of lattice structure for iodine
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Answer
Iodine has covalent bonding. The type of lattice structure is a simple molecular lattice.
Step 5
Complete the table with the name of a type of bonding and type of lattice structure for sodium chloride
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Answer
Sodium chloride has ionic bonding. The type of lattice structure is a giant ionic lattice.
Step 6
Name the strongest type of intermolecular force in ice
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Answer
The strongest type of intermolecular force in ice is hydrogen bonding.
Step 7
Draw a fully labelled diagram of two water molecules in ice, showing the force in (i) and how it forms
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Answer
A diagram should include two water molecules, labeled 'H₂O', with dashed lines representing hydrogen bonds between the oxygen atom of one molecule and the hydrogen atoms of another. Add labels for the partial positive charges (δ+) on hydrogens and the partial negative charge (δ-) on oxygen.
