Malleable- metals that can be hammered into thin sheets like aluminum foil.
Ductile- metals that can be drawn into wire.
Who stated the atomic theory of matter: Dalton
Ion- a non-neutral atom.
Isotopes- Atom of an element with the same number of protons but a different number of neutrons.
What is the mass of protons and neutrons and electrons: Protons & Neutrons = 1 AMU / electrons = 1/1836 AMU
What happens to an electron if it looses or gains energy: As it looses energy it will drop to an energy level closer to the nucleus but as it gains energy it will move to an energy level away from the nucleus.
How do you figure out the atomic mass:
Do isotopes have different atomic masses or atomic numbers: atomic mass.
1st energy level holds 2 electrons 2nd holds 8.
Mass number atomic number = number of neutrons