Types of Bonding & Properties (AQA A-Level Chemistry): Quizzes

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Changes in State: Energy Changes
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What happens to energy when a substance melts?

Energy is absorbed

Why do ionic compounds like sodium chloride have high melting points?

Strong electrostatic forces between ions

What energy change occurs when a liquid freezes?

Energy is released

What happens to energy when a liquid boils?

Energy is absorbed

What energy change occurs during condensation?

Energy is released

Which substance can sublime?

Solid iodine

What happens to energy when a solid sublimes to a gas?

Energy is absorbed

Why does ice have a lower melting point than sodium chloride?

Ice has weaker intermolecular forces

How does strong hydrogen bonding affect boiling point?

Increases boiling point

What is the relationship between freezing point and melting point?

They are the same temperature

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