|What is a positively charged particle in the nucleus of the atom?
|What is the region surrounding an atom's nucleus where one or more electrons are often found?
||The electron cloud
|What is a negatively charged particle that occupies the space in an atom outside the nucleus?
|What are one or more atoms of an element having the same number of protons but a different number of neutrons?
|What is the region the center of an atom that contains most of the mass of an atom?
|What is the number of protons in the nucleus of an atom of an element?
||The atomic number
|What is an uncharged particle in the nucleus of an atom?
|Does the nucleus of an atom contain protons and neutrons or electrons and neutrons?
||Protons and electrons
|Does the nucleus have a positive or negative charge?