The Core of the Atom
Protons have this charge
Positive
This part of the atom is found outside of the nucleus
electrons
People who did mental investigations
philosophers
Neutrons have this charge
zero
Inside the nucleus you will find
protons and neutrons
Greek Philosopher who named the atom
Democritus
Electrons have this charge
negative
If an atom of Gold has 118 protons, how many electrons does it have?
118
Which English Chemist presented a modern theory of the atomic theory?
John Dalton
This part of the atom is equal to the atomic number
proton
Atoms of a given element are all the ...
same
The Greek word atomos means...
Indivisible
You add these to find the mass number of an element
protons and neutrons
Are atoms very large or very small?
very small
Are the symbols for elements the same or different in different countries?
The same