Lesson 5.2.2.3
5.2.2.3 Properties of ionic compounds Quiz: AQA Combined Science, Unit 9
20 questions
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Lesson 5.2.2.3, Properties of ionic compounds: 20 multiple choice questions for the AQA GCSE Combined Science (8464), Unit 9: Bonding, structure, and the properties of matter, written with Revision Ninja.
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The 20 questions
-
Why do ionic compounds have high melting points?
- Low molecular mass
- Strong electrostatic forces
- Delocalised electrons
- Weak intermolecular forces
-
Why do molten ionic compounds conduct electricity?
- Bonds are broken
- Ions can move
- Molecules are free
- Electrons can move
-
What structure do solid ionic compounds form?
- Giant ionic lattice
- Metallic structure
- Giant covalent
- Simple molecular
-
Why do solid ionic compounds fail to conduct electricity?
- Electrons flow freely
- Bonds are covalent
- Ions are fixed
- Ions are neutral
-
Which force holds ions together in an ionic lattice?
- Gravity
- Covalent sharing
- Metallic delocalisation
- Electrostatic attraction
-
What is the typical melting point of an ionic compound?
- Negative
- High
- Low
- Variable
-
What must be overcome to melt an ionic lattice?
- Covalent bonds only
- Intermolecular forces
- Single weak forces
- Many strong bonds
-
What happens when an ionic compound dissolves in water?
- It stops conducting
- It forms molecules
- It conducts electricity
- It becomes covalent
-
What holds particles together in a sodium chloride crystal?
- Intermolecular forces
- Ionic bonds
- Metallic bonds
- Covalent bonds
-
Can a solid ionic crystal conduct electricity?
- Yes
- Only when heated
- No
- Only in darkness
-
Which particles carry current in molten potassium bromide?
- Atoms
- Ions
- Molecules
- Electrons
-
What carries the electric charge when an ionic compound is dissolved in water?
- Neutral molecules
- Fixed atoms
- Delocalised electrons
- Free ions
-
Under which condition do ionic compounds conduct electricity?
- At room temperature
- Molten or dissolved
- Solid state only
- As dry crystals
-
What type of bonds exist between the ions in a giant ionic lattice?
- Metallic bonds
- Covalent bonds
- Electrostatic forces
- Intermolecular forces
-
Which physical property is characteristic of a giant ionic lattice?
- Low boiling point
- Gaseous at room temperature
- Electrical insulation
- High melting point
-
What type of structure has a high melting point and conducts electricity only when molten?
- Simple covalent
- Giant metallic
- Small molecule
- Giant ionic
-
What restricts electrical conduction in solid ionic compounds?
- Delocalised electrons
- Weak intermolecular forces
- Fixed ion positions
- Lack of ions
-
What causes the difference in electrical conductivity between solid and dissolved sodium chloride?
- Covalent bonding
- Molecule size
- Ion presence
- Ion mobility
-
Which property is NOT a characteristic of typical ionic compounds?
- High melting points
- High boiling points
- Conduction when molten
- Low melting points
-
What do solid ionic compounds fail to do?
- Melt easily
- Conduct electricity
- Form giant lattices
- Dissolve in water
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