Explain,why we cannot call any fresh vegetable or fruit a pure substance?

Pure substances are materials with constant compositions and consistent properties throughout. A pure substance consists of one type of particle such as an element or compound; in contrast to fresh vegetables and fruit which typically contain many substances including water, sugars, vitamins minerals fibers organic compounds like an apple which contain fructose glucose fiber vitamins phytochemicals; these do not meet this definition and therefore cannot be considered pure substances.

Supplemental Knowledge:

Chemistry defines pure substances as materials with constant composition and consistent properties throughout. Pure substances may consist of elements or compounds; an element contains only one type of atom (e.g. oxygen or gold); in contrast compounds consist of multiple kinds of atoms chemically combined together in fixed proportions to form their structure (such as water or carbon dioxide).

Real-Life Connections:

Understanding the difference between pure substances and mixtures is vital in many fields, particularly food quality control. Knowing that fresh produce contains various components can allow you to account for natural variations when testing for nutrients or contaminants in its constituent parts.

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