What is an atom in terms of element properties?
The smallest part of an element that retains its properties.
Why is an atom electrically neutral?
Because it has equal numbers of protons and electrons.
What is the atomic number of an element?
The number of protons in its nucleus.
How do you calculate the number of neutrons in an atom?
Subtract the atomic number from the mass number.
Atom: smallest particle of an element
Maintains the element's properties
Proton location and charge
Nucleus, +1 charge
Neutron characteristics
In nucleus, neutral charge, mass 1
Electron details
In energy levels, -1 charge, mass 1/1840
Atomic number
Number of protons in an atom
Mass number calculation
Protons + neutrons in nucleus
Isotopes differ in
Number of neutrons, same protons
Test your knowledge with 10 questions on The Basics of Atomic Chemistry.
1. Regarding protons, which of the following statements are correct?
2. The characteristics of electrons include:
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