Chemistry Part 2 Gr.9 Flashcards
How do you find protons?
Protons = Atomic Number
How do you find electrons?
Electrons = Atomic Number (with charge)
How do you find neutrons?
Atomic Mass - Atomic Number
What are the equations in the density triangle?
Density = Mass / Volume, Mass = Density x Volume, Volume = Mass / Density
What is an Ion?
An Ion is an atom with an electrical charge. Example: Au+1
Group 1 is made up of
Alkali metals (Except hydrogen)
Group 2 is made up of
Alkaline earth metals
Group 17 is made up of
Halogens
Group 18 is made up of
Noble gases
What is in the bottom staircase for metals?
Post-transition metals or other metals
What could be in the middle of the staircase for metals? (I hate this!)
Metalloids
What is the top staircase for metals (This is my final straw…)
Non-metals or reactive nonmetals
How do you draw a Lewis Dot Diagram?
The symbol for the element in the middle, then its valence electrons only surrounding it in a cross shape.
Who is Dmitri Mendeleev?
Inventor of the periodic table.
Who is John Delton?
Inventor of the atomic model of matter.
