SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Change in state of matter
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A new substance is formed
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Bubbles are produced
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An explosion
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Detailed explanation-1: -In a chemical change, the atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants. When a new substance is formed, the change is called a chemical change.
Detailed explanation-2: -Chemical changes result in the production of a new substance and cannot be reversed.
Detailed explanation-3: -Chemical reactions involve breaking chemical bonds between reactant molecules (particles) and forming new bonds between atoms in product particles (molecules). The number of atoms before and after the chemical change is the same but the number of molecules will change.
Detailed explanation-4: -Therefore, new substances formed in a chemical reaction are called products.