The number of protons and neutrons in the nucleus of an atom of an element
The number of protons in the nucleus of an atom of an element
Relative Atomic mass
The mean mass of an atom, taking into account all of its isotopes, compared to a Carbon 12 atom (compared to the relative atomic mass of Carbon, which is 12)
A substance made up of only one type of atom. It cannot be broken down into anything simpler. Each atom in the element has the same number of protons
Two or more different elements chemically bonded together (eg: H2O, NaCl, CaBr2 )
2 or more non-metal atoms covalently bonded together. The atoms may be from the same element or from different elements
Atoms which have lost or gained electrons to become positively or negatively charged respectively
Iron II Fe 2+, Iron III Fe 3+
Copper I Cu +, Copper II Cu 2+
Lead II Pb 2+, Lead IV Pb 4+
Tin II Sn 2+, Tin IV Sn 4+
Silver I Ag+
Zinc II Zn 2+
The number of electrons an atom uses to bond with atoms of another element.
All nitrates, most sulphates, most chlorides, most bromides, most iodides. Ammonium Carbonate, Sodium Carbonate, Potassium Carbonate, Ammonium Hydroxide, Sodium Hydroxide, Potassium Hydroxide, Lithium Hydroxide.
Lead sulphate, Barium sulphate, calcium sulphate, silver chloride, silver bromide, silver bromide. Most carbonates, most hydroxides.
Covalent & Ionic Bonding, Hydrate Study Guide92 terms