Which process is gas turning directly into solid?

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Study for the IGCSE Edexcel Chemistry Test. Access flashcards and multiple choice questions with hints and explanations. Get ready for your exam!

Multiple Choice

Which process is gas turning directly into solid?

Explanation:
Think about how matter changes state when energy is removed. If a gas loses enough energy, its particles can lock directly into a solid structure without becoming a liquid first. This direct gas-to-solid change is called deposition, which is why frost forms on surfaces from water vapor in cold air. By contrast, condensation is gas turning into a liquid, sublimation is solid turning into gas, and boiling is a liquid turning into gas.

Think about how matter changes state when energy is removed. If a gas loses enough energy, its particles can lock directly into a solid structure without becoming a liquid first. This direct gas-to-solid change is called deposition, which is why frost forms on surfaces from water vapor in cold air. By contrast, condensation is gas turning into a liquid, sublimation is solid turning into gas, and boiling is a liquid turning into gas.

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