9th Grade General Chemistry Quizzes, Questions & Answers
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Chemistry is fundamental because it helps us to know the composition, structure, and changes of matter. All of the matters are made up of chemistry. It is the branch of science that operates the identification of elements of...
Questions: 10 | Attempts: 1080 | Last updated: Apr 1, 2024
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Sample QuestionA heavy crystalline solid on heating decrepitates to form a residue that is reddish-brown when hot and yellow when cold. It gives off a brown gas along with oxygen.
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