Question

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Answer 1

Answer:

SOLID → LIQUID → GAS

We can change a solid into a liquid or gas by changing its temperature. This is known as changing its state. Water is a liquid at room temperature, but becomes a solid (called ice) if it is cooled down. The same water turns into a gas (called water vapour) if it is heated up.

GAS → LIQUID → SOLID

Under certain circumstances, gas can transform directly into a solid. This process is called deposition. Water vapor to ice - Water vapor transforms directly into ice without becoming a liquid, a process that often occurs on windows during the winter months.