What makes up an atom?
What is does the nucleus consist of?
What are the charges for protons and electrons and neutrons?
What do electrons do?
What is the weight of electrons?
Is the number of neutrons the same as protons?
The number of ........... equals the number of ........?
What are the Electron shell rules? 1), 2),3),4), 5).
What do you use the Electron shell rules to work out?
Elements consist of One type of.... what?
Does each element has the same or different number of protons?
Each element has a what numbers? A + M
What is the atomic number ?
What else does the atomic number show?
What is the mass number?
How do you find the number of neutrons in an atom?
NOTE : the mass number is roughly double the atomic number, because there's the same number of neutrons as protons in any nucleus.
What is an isotope?
What is relative Atomic Mass?
Who was it who began to notice periodic patterns in the properties of the elements?
How many known elements are there in the periodic table
How is the periodic table arranged?
What are Periods?
What are groups?
What is the protons and neutrons made up of?