Multiple Choice
In introductory chemistry, what is the approximate mass of a neutron?
2
views
4. Atoms and Elements
Subatomic Particles (Simplified)
Struggling with Introduction to Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In the simplified subatomic particle model, which quantity predicts the element to which an atom belongs?
A
The number of neutrons in the nucleus
B
The number of electrons in the atom
C
The number of protons in the nucleus (atomic number)
D
The mass number (total protons plus neutrons)
Verified step by step guidance1
Understand that an element is defined by its atomic number, which is the number of protons in the nucleus of an atom.
Recall that the number of protons determines the identity of the element because each element has a unique number of protons.
Recognize that the number of neutrons can vary within atoms of the same element, leading to different isotopes, but this does not change the element itself.
Note that the number of electrons can change if the atom is ionized, but the element remains the same as long as the number of protons is unchanged.
Understand that the mass number is the sum of protons and neutrons, which affects the isotope and atomic mass but not the element identity.
1:25mWatch next
Master Subatomic Particles (Simplified) Concept 1 with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Subatomic Particles (Simplified) practice set
Problem sets built by lead tutorsExpert video explanations