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Multiple Choice
Which of the following media are chemically definable?
A
Mixtures
B
Solutions
C
Colloids
D
Pure substances
Verified step by step guidance
1
Begin by understanding the term 'chemically definable'. This refers to substances whose chemical composition can be precisely described using a chemical formula.
Consider the nature of mixtures. Mixtures are combinations of two or more substances where each retains its own chemical identity. They are not chemically definable because their composition can vary.
Examine solutions. Solutions are homogeneous mixtures where one substance (solute) is dissolved in another (solvent). While solutions have uniform properties, they are not chemically definable because the ratio of solute to solvent can vary.
Analyze colloids. Colloids are mixtures where one substance is dispersed evenly throughout another. Like solutions, they are not chemically definable due to variable composition.
Finally, consider pure substances. Pure substances have a fixed composition and can be chemically defined by a specific chemical formula, making them chemically definable.