Multiple Choice
Which of the following is a homogeneous mixture?
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1. Intro to General Chemistry
Classification of Matter
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Which of the following correctly identifies the two types of pure substances?
A
Elements and compounds
B
Homogeneous and heterogeneous substances
C
Mixtures and solutions
D
Atoms and molecules
Verified step by step guidance1
Understand the definition of a pure substance: a material that has a constant composition and distinct chemical properties throughout.
Recall that pure substances are classified into two main types: elements and compounds.
Elements are pure substances consisting of only one type of atom, such as oxygen (O\_2) or gold (Au).
Compounds are pure substances made up of two or more different elements chemically combined in fixed proportions, like water (H\_2O) or carbon dioxide (CO\_2).
Recognize that other options like mixtures, solutions, homogeneous, and heterogeneous substances are not pure substances but rather combinations or classifications of mixtures.
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