Common-Core/ Grade 7
Science MCQ Based On Classify elementary substances and compounds using chemical formulas
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Common-Core Grade 7 - 7 Classify elementary substances and compounds using chemical formulas
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special properties
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Compound
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Pure substance which cannot be broken down by chemical
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symbol : Fe
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H2O
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Think about carbon, oxygen and hydrogen
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Chemical
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All are required
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Chemical substance composed of many identical molecules
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