Multiple Choice
Which of the following statements correctly describes the behavior of nitrogen gas under ideal conditions according to the Ideal Gas Law?
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1. Intro to General Chemistry
Classification of Matter
Multiple Choice
Which of the following statements is true regarding the classification of matter?
A
A mixture can be separated into its components by physical means.
B
A compound is a pure substance that cannot be broken down into simpler substances.
C
An element is a mixture of two or more substances.
D
A homogeneous mixture has visibly distinguishable parts.
Verified step by step guidance1
Understand the definitions of key terms: A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means. A compound is a pure substance composed of two or more elements chemically combined in a fixed ratio. An element is a pure substance that cannot be broken down into simpler substances by chemical means.
Evaluate the statement: 'A mixture can be separated into its components by physical means.' This is true because mixtures, such as saltwater, can be separated by physical processes like evaporation or filtration.
Evaluate the statement: 'A compound is a pure substance that cannot be broken down into simpler substances.' This is false because compounds can be broken down into their constituent elements by chemical reactions.
Evaluate the statement: 'An element is a mixture of two or more substances.' This is false because an element is a pure substance consisting of only one type of atom.
Evaluate the statement: 'A homogeneous mixture has visibly distinguishable parts.' This is false because a homogeneous mixture, like a solution, has a uniform composition throughout and does not have visibly distinguishable parts.
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