Multiple Choice
What is the smallest unit of an element that still retains the properties of the element?
2. Atoms & Elements
The Atom
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which statement is true about all atoms?
A
All atoms have the same atomic mass.
B
All atoms have the same number of protons.
C
All atoms have electrons orbiting a nucleus.
D
All atoms are electrically charged.
Verified step by step guidance1
Begin by understanding the structure of an atom. An atom consists of a nucleus, which contains protons and neutrons, and electrons that orbit around this nucleus.
Consider the atomic mass. Atomic mass varies between different elements because it is the sum of the number of protons and neutrons in the nucleus. Therefore, not all atoms have the same atomic mass.
Examine the number of protons. The number of protons, known as the atomic number, is unique to each element. Thus, not all atoms have the same number of protons.
Evaluate the presence of electrons. All atoms have electrons orbiting their nucleus, which is a fundamental characteristic of atomic structure.
Assess the electrical charge of atoms. Atoms are generally neutral, meaning they have no overall electrical charge, as the number of protons (positive charge) is equal to the number of electrons (negative charge).
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