periodic table

• fewer shells means a greater attraction between the outer electrons and the nucleus
• greater attraction between nucleus and outer electrons means the atom is able to gain an electron more easily
• the greater the number of shells means the greater the size of the particles
• the greater the size of particles means the greater the strength of intermolecular forces
• aluminium is more reactive than carbon
• moles is the mass divided by relative atomic mass
• mixtures are made of two or more elements that are not chemically combined
• compounds are made of elements that have been chemically combined
• protons and electrons are the same
• hydrogen ions make sulfuric acid, an acid
• a neutralisation reaction is H+(aq) + OH(aq)-->H20(l)
• a strong acid fully ionises in an aqueous solution
• methane ethane propane butane pentane hexane