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Concept explainers
The chapter sections to review are shown in parentheses at the end of each problem.
A "chemical-free” shampoo includes the following ingredients: water, cocamide, glycerin, and citric acid. Is the shampoo truly "chemica1-free”? (1.1)
![Check Mark](/static/check-mark.png)
Interpretation:
Can we claim a shampoo containing different ingredients like water, cocamide, glycerin, and citric acid, as “chemical free”.
Concept Introduction:
A chemical is defined as a chemically pure substance which has same composition and properties irrespective of source, or mode of production.
Answer to Problem 35UTC
Solution:
No, we cannot claim the shampoo as chemical free.
Explanation of Solution
All the ingredients present in the shampoo like water, cocamide, glycerin, and citric acid are chemicals. Chemicals are pure substances, which have the same chemical composition irrespective of its source.
It may be concluded that nothing is “chemical free”. However, we can say that shampoo is “synthetic chemical free” as the source of all the ingredients may be natural.
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