객관식
Who was the first person to suggest the existence of atoms?
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2. Atoms & Elements
The Atom
객관식
Which of the following is the smallest particle of an element that retains the chemical properties of that element?
A
Electron
B
Atom
C
Proton
D
Molecule
검증된 단계별 안내1
Understand the question is asking for the smallest particle of an element that retains its chemical properties.
Recall that an electron is a subatomic particle with a negative charge but does not define the chemical properties of an element by itself.
Recognize that a proton is a positively charged subatomic particle found in the nucleus, which helps define the element but is not the smallest particle retaining chemical properties alone.
Know that a molecule is a group of atoms bonded together and can consist of different elements, so it is not the smallest particle of a single element.
Conclude that an atom is the smallest particle of an element that retains all the chemical properties of that element.
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