SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Solutions
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Pure Substances
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Compounds
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Mixtures
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Detailed explanation-1: -Elements combine to form chemical compounds that are often divided into two categories. Metals often react with nonmetals to form ionic compounds. These compounds are composed of positive and negative ions formed by adding or subtracting electrons from neutral atoms and molecules.
Detailed explanation-2: -Combination reactions are those reactions in which two elements combine together to form a single compound. The general form of Combination reaction is : A +B → C. Example: H2(g)+ Cl2(g) → 2 HCl(aq)
Detailed explanation-3: -Hence, a compound is formed when two or more elements combine together chemically.
Detailed explanation-4: -A compound is a substance formed when two or more chemical elements are chemically bonded together.