In the classification of matter, a mixture is best described as which type of combination?

• A. A chemical combination of elements
• B. A physical combination of two or more substances
• C. A compound formed by chemical reactions
• D. A pure substance with a fixed composition

Answer: (B)

Verified step by step guidance

1. Understand the classification of matter, which includes pure substances and mixtures.
2. Recall that pure substances have a fixed composition and distinct properties, such as elements and compounds.
3. Recognize that mixtures consist of two or more substances physically combined, not chemically bonded.
4. Note that in mixtures, the components retain their individual properties and can be separated by physical means.
5. Conclude that a mixture is best described as a physical combination of two or more substances.