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Which is an example of different states of the same substance?

Answer and explanation

Correct answer: Ice water and steam

The direct answer is A: ice, water and steam are different states of the same substance, water. Ice is solid water, liquid water is the liquid state, and steam is water in the gaseous state. In a state change, the arrangement and movement of particles change, but the chemical identity remains \\(H_2O\\). Melting changes ice to water, boiling changes water to vapour, and cooling can reverse these changes. Option A is correct. Option B is wrong because iron and wood are different substances with different compositions. Option C is wrong because salt and sugar are different compounds, not states of one substance. Option D is wrong because sand and soil are mixtures with different compositions. The important test is not whether the materials look related, but whether their chemical composition remains the same. Memory cue: ice, water and steam are all \\(H_2O\\).

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Water StatesIceSteam

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