Class 4 · Science · Hard level · 5 questions
Melting, Freezing & Boiling: Apply It
Changing state by heating and cooling, and why it is always reversible. In Class 4 Science the topic covers changing state, melting and freezing, boiling and condensing and a physical change. This quiz is the hardest level, with Class 4 exam-style questions that mix the ideas together. 5 questions (multiple choice), marked the moment you finish, with the reason for every answer.
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