Types of Elements metals & non-metals non-metals only involved State at 20C solid solids, liquids, gases Forces between Ions very strong weak or Molecules Melting & Boiling high relatively low Points Solubility in Water soluble many are not soluble solid no – Conducts Electricity? liquids yes no – dissolved in water - yes NaCl (salt) H2 Examples CaO H2O AgNO3 CCl4
Types of Elements involved metals & non-metals non-metals only State at 20C solid solids, liquids, gases Forces between Ions or Molecules very strong weak Melting & Boiling Points high relatively low Solubility in Water soluble many are not soluble Conducts Electricity? solid – no liquids – yes dissolved in water - yes no Examples NaCl (salt) CaO AgNO3 H2 H2O CCl4