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Hello everyone.
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In question no.
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6, a part, chemical changes are state changes.
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This is not true.
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Chemical changes involve the formation of new substance while state changes are physical changes that involve a change in the state of matter without changing the substance's composition.
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The second one is, so the b part is, chemical change, chemical changes can produce heat.
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This statement is true.
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Chemical changes often involve the release or absorption of energy including heat.
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And for c part, a chemical change is a change in the composition of substance.
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So, this statement is also true.
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This statement is true.
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Chemical changes involve the formation of new substances with different compositions...