Atoms & Periodic Table Flashcards
Atom
The smallest particle into which an element can be divided and still be the same substance.
Atom Charge
Neutral/no charge
Nucleus
The tiny extremely dense, positively charged region in the center of an atom. (Has Protons and Neutrons)
Protons
The positively charged particles in the nucleus (CANNOT CHANGE THE AMOUNT OF PROTONS)
Neutrons
The particles in the nucleus that have no charge.
Electrons
The negatively charged particles found in all atoms. (Virtually no mass)
Quarks
The smaller particles that make up protons and neutrons.
Quark Charge
Neutral/No charge
Isotope
An atom that has a different number of neutrons than usual. (Almost every atom)
Ion
An atom that has a different number of electrons than usual.
An-Ion
Negative/gained electrons
Cat-Ion
Positive/lost electrons
Electron Energy
Any of the several different regions in which electrons travel about the nucleus.
Valence Shell
The outermost energy level around the nucleus.
Valence Electrons
Electrons which are only found in the valence shell. (Atomic number -2)