Atoms And Atomic Structure Flashcards
What is an atom?
An atom is the smallest, indivisible unit of all matters
What type of charge does a proton carry?
Positive
Because of the charge protons have, how do they act when they are in the nucleus?
They repel each other
Because of the charge protons have, how do they act when they are togetherin the nucleus?
They repel each other
Where are neutrons found?
In the nucleus
What is a neutrons mass similar to
Protons
How do neutrons help
Minimize repulsion to keep nucleus stable
What is the atomic number of an atom
Number of protons in the atom
How to find the mass number of an atom
Sum of number of protons and neutrons
What do you call the ring around the nucleus
Orbits, energy levels or shells
How many electrons occupy the first shell
2
How many electrons occupy the 2nd shell
8
How many electrons occupy the 3rd shell
8
How many electrons occupy the 4th shell
18
How many electrons occupy the 4th shell
18
