
Concept explainers
Interpretation: By using the formation of water from hydrogen and oxygen, the terms chemical reaction, reactant and product are to be explained.
Concept Introduction:
Chemical reaction is a process in which one substance breaks into two or more substances react with each other in the presence of reagent or catalyst under the appropriate experimental conditions leading to the formation of one or more substances. During
The substances undergoing a reaction is known as reactants, whereas the substances obtained from chemical reaction are called as products.
To Explain: The terms chemical reaction, reactant and product using the formation of water from hydrogen and oxygen.

Explanation of Solution
Formation of water takes place by the combination of hydrogen and oxygen.
- Chemical reaction is a combination of two or more substance to give one or more substance as product. Here, in the formation of water, hydrogen and oxygen combines with each other to give water.
- Hydrogen and oxygen undergoing the reaction are called as reactants.
- Water obtained from the reaction of hydrogen and oxygen is called as product.
By using the formation of water from hydrogen and oxygen, the terms chemical reaction, reactant and product are explained.
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Chapter 8 Solutions
Chemistry: Atoms First
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