Atomic Structure Flashcards
What are atoms
Particles that make up elements
What does the periodic table show
The known elements of the world
How are elements organised on the periodic table
By their atomic value
Where are protons and neutrons found
In the nucleus
Where do electrons live
In shells orbiting the nucleus
What are the names of the atomic sub particles
Protons, neutrons and electrons
What is the relative charge of a proton
+1
What is the relative mass of a proton
1
What is the relative charge of a neutron
0
What is the relative mass of a neutron
1
What is the relative charge of an electron
-1
What is the relative mass of an electron
1/1840
What is the atomic number
The number of protons in an atom’s nucleus
What is the mass number
The total number of protons and neutrons
What must an atom contain to be neutral
Equal number of protons and electrons