What's in an Atom?
http://en.wikipedia.org/wiki/Electron
Electrons, Neutrons, Protons: Electrons are the negative charge in an atom, and circles around outside of the Nucleus. The Neutron is the positive charge, and it remains in the Nucleus of the atom. The Proton's are neutral, neither positive or negative, and remain in the Nucleus of an atom along with the Neutrons.
http://en.wikipedia.org/wiki/Atomic_number
Atomic Number: This number is how many Protons there are in a single atom, and is identical to the charge number of an atom. This is very important, since it identifies the chemical of the atom. It is also equal to the amount of electrons, in an uncharged atom. If an atom has the same atomic number but different Neutrons, then that is classified as an Isotope.
Mass Number: The mass number, or atomic mass number of an atom is the sum of the Protons and Neutrons in a nucleus. This number is different for every different Isotope or Chemical Element. Because of this, the difference between the Atomic Number and the Mass Number give you the number of Neutrons in said element or Isotope. (Atomic Number - Mass Number = Neutrons)
Isotope: Isotopes are a variation of a Chemical Element, such as all Isotope's have the same Protons in each atom, they have a different Mass Number. Because of this, different Isotope's for the same element are in the same place on the periodic table. Each atomic number specifies a different element, but not a specific Isotope. The number of Nucleons (Both Neutrons and Protons) is the the atomic mass number, and every Isotope of an element has different mass numbers.
http://en.wikipedia.org/wiki/Electron
Electrons, Neutrons, Protons: Electrons are the negative charge in an atom, and circles around outside of the Nucleus. The Neutron is the positive charge, and it remains in the Nucleus of the atom. The Proton's are neutral, neither positive or negative, and remain in the Nucleus of an atom along with the Neutrons.
http://en.wikipedia.org/wiki/Atomic_number
Atomic Number: This number is how many Protons there are in a single atom, and is identical to the charge number of an atom. This is very important, since it identifies the chemical of the atom. It is also equal to the amount of electrons, in an uncharged atom. If an atom has the same atomic number but different Neutrons, then that is classified as an Isotope.
Mass Number: The mass number, or atomic mass number of an atom is the sum of the Protons and Neutrons in a nucleus. This number is different for every different Isotope or Chemical Element. Because of this, the difference between the Atomic Number and the Mass Number give you the number of Neutrons in said element or Isotope. (Atomic Number - Mass Number = Neutrons)
Isotope: Isotopes are a variation of a Chemical Element, such as all Isotope's have the same Protons in each atom, they have a different Mass Number. Because of this, different Isotope's for the same element are in the same place on the periodic table. Each atomic number specifies a different element, but not a specific Isotope. The number of Nucleons (Both Neutrons and Protons) is the the atomic mass number, and every Isotope of an element has different mass numbers.