Multiple Choice
Which elements or compounds make up the majority of the atmospheres of the gas giant planets in our solar system?
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1. Intro to General Chemistry
Classification of Matter
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Which of the following cannot be chemically broken down into simpler substances?
A
Compound
B
Element
C
Solution
D
Mixture
Verified step by step guidance1
Understand the definitions: An element is a pure substance consisting of only one type of atom, and it cannot be broken down into simpler substances by chemical means.
Recognize that a compound is a substance formed when two or more elements chemically combine in fixed proportions, and it can be broken down into simpler substances (elements) by chemical reactions.
Know that a mixture is a physical combination of two or more substances that can be separated by physical means and does not have a fixed composition.
Identify that the question asks which substance cannot be chemically broken down into simpler substances, which points to the fundamental nature of elements.
Conclude that since elements are the simplest form of matter that retain their chemical properties and cannot be decomposed chemically, the correct answer is 'Element'.
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