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Grade 8 Science Quiz
Grade 8 Science Chemical Changes and Conservation of Mass - 20 Questions
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3
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Correct：20、Wrong：0
57.33
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Check whether the question asks for a term, observation, reason, calculation, or experiment design.
Look at the condition: closed/open container, series/parallel circuit, rising air, or controlled variable.
Connect the observation to the science idea.
Mass, voltage, current, humidity, and organ roles each have different clues.
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