Physical Properties of Ionic and Covalent Compounds (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
Why are ionic compounds typically solid at room temperature?
Why are ionic compounds typically solid at room temperature?
Strong electrostatic forces in lattice
What states can covalent compounds exist in at room temperature?
What states can covalent compounds exist in at room temperature?
Liquids, gases, or soft solids
What is the melting point of sodium chloride ()?
What is the melting point of sodium chloride ()?
801°C
What is the melting point of iodine ()?
What is the melting point of iodine ()?
114°C
Why do ionic compounds have high melting points?
Why do ionic compounds have high melting points?
Strong electrostatic forces to break
Why do covalent compounds have low melting points?
Why do covalent compounds have low melting points?
Weak intermolecular forces
What is required for a substance to conduct electricity?
What is required for a substance to conduct electricity?
Mobile charged particles
Why don't ionic compounds conduct electricity when solid?
Why don't ionic compounds conduct electricity when solid?
Ions locked in fixed positions
When do ionic compounds conduct electricity?
When do ionic compounds conduct electricity?
When melted or dissolved
Why don't covalent compounds conduct electricity?
Why don't covalent compounds conduct electricity?
Electrons localised in bonds
What is the typical solubility of ionic compounds in water?
What is the typical solubility of ionic compounds in water?
Usually soluble
Which covalent compounds are highly soluble in water?
Which covalent compounds are highly soluble in water?
Polar covalent compounds
What does the principle 'like dissolves like' mean?
What does the principle 'like dissolves like' mean?
Polar dissolves in polar solvents