1:20 understand how to use electrical conductivity and the acid-base character of oxides to classify elements as metals or non-metals Metals conduct electricity have oxides which are basic, reacting with acids to give a salt and water Non – Metals do not conduct electricity (except for graphite) have oxides which are acidic or neutral Related Posts:1.13 understand how vector quantities differ from scalar quantities1.14 understand that force is a vector quantity1.33 understand how the upward forces on a light beam, supported at its ends, vary with the…2.02 understand how the use of insulation, double insulation, earthing, fuses and circuit…2.03 understand why a current in a resistor results in the electral transfer of energy and…2.08 understand how the current in a series circuit depends on the applied voltage and the… Hydr0Gen2019-05-23T15:14:14+00:00Categories: (d) The Periodic Table, 1 Principles of chemistry, Edexcel iGCSE Chemistry|Tags: 1:20, Chemistry, Double, GCSE, GCSE_Chemistry_SpecPoint, SpecPoint, SSTRT, Topic: Key Reactions, Topic: Metal Reactivity & Halogens| Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInTumblrPinterestVkEmail