: A "theft" where a metal gives an electron to a non-metal, creating charged ions that stick together like magnets.
: A "partnership" where two non-metals share electrons to fill their outer shells. Whole of AQA GCSE Chemistry paper 1 in 1hr 15 mins Chemistry For Dummies
: Positively charged particles in the nucleus; the number of protons defines what element an atom is (its atomic number). : A "theft" where a metal gives an
The Periodic Table of Elements is a "cheat sheet" for the universe. Chemistry For Dummies
: Elements in the same column have similar chemical "personalities" because they have the same number of outer-shell electrons.
: Neutral particles in the nucleus; they add mass but don't change the element's identity. Variations in neutron counts create isotopes .