Define reactants and products. Describe the process of crystallization. Is respiration a chemical change? How?
Answers
Explanation:
In a chemical reaction, only the atoms present in the reactants can end up in the products. No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
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Answer:
A reactant is a substance that is present at the start of a chemical reaction.
The substance(s) to the right of the arrow are called products . A product is a substance that is present at the end of a chemical reaction.
Crystallization or crystallisation is the process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal. Some of the ways by which crystals form are precipitating from a solution, freezing, or more rarely deposition directly from a gas.
In the oxidation of glucose, carbon dioxide and water are formed. As new products are formed of different composition and characteristics, the respiration is considered as a chemical change.