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Which of the following best describes the composition of cathode rays?
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2. Atoms & Elements
The Atom
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Which of the following is considered the smallest particle of matter that retains the chemical properties of an element?
A
Proton
B
Electron
C
Atom
D
Molecule
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Understand the question: It asks for the smallest particle of matter that retains the chemical properties of an element.
Recall definitions: A proton is a subatomic particle found in the nucleus of an atom, but it alone does not retain chemical properties.
Recall definitions: An electron is a subatomic particle with a negative charge, orbiting the nucleus, but it also does not retain chemical properties by itself.
Recall definitions: A molecule is made up of two or more atoms bonded together and represents a compound or element, but it is not the smallest particle of an element.
Recall definitions: An atom is the smallest unit of an element that retains all the chemical properties of that element, making it the correct answer.
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