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Multiple Choice
In the classification of matter, how should black coffee (filtered, unsweetened) be classified?
A
A homogeneous mixture (solution), because it contains many dissolved substances uniformly distributed
B
An element, because it cannot be broken down into simpler substances
C
A pure compound, because it has a fixed chemical formula
D
A heterogeneous mixture, because it contains visibly different phases
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Verified step by step guidance
1
Step 1: Understand the classification categories of matter: elements, pure compounds, homogeneous mixtures, and heterogeneous mixtures.
Step 2: Recall that an element is a substance that cannot be broken down into simpler substances by chemical means and consists of only one type of atom.
Step 3: Recognize that a pure compound has a fixed chemical formula and consists of two or more elements chemically combined in a definite ratio.
Step 4: Identify that a homogeneous mixture (solution) has a uniform composition throughout, meaning the different components are evenly distributed and not visibly distinguishable.
Step 5: Note that a heterogeneous mixture contains visibly different phases or parts that can be physically separated, such as layers or particles.