Atomic Theory Flashcards
1
Q
Nucleus
A
Center part of an atom, made up of protons and neutrons
2
Q
Protons
A
Positively charged particles found in the nucleus
3
Q
Electrons
A
Negatively charged, very light particles in an atom. Electrons move around the nucleus of the atom.
4
Q
Neutrons
A
Particles with no electrical charge that are found in the nucleus of an atom
5
Q
Isotopes
A
Atoms that have the same element with a different Atomic mass
6
Q
Stable
A
A nucleus that does not change spontaneously. The protons and neutrons in the nucleus are held together strongly.
7
Q
Unstable
A
An atom in which the neutrons and protons in the nucleus are not held together strongly
8
Q
Radioisotope
A
The radioactive form of an isotope
