A KS3 SCIENCE-chemistry m/c combined QUIZ on"ACIDS & ALKALIS, SIMPLE CHEMICAL REACTIONS, PARTICLES MODELS (gas, liquid, solid), SOLUTIONS, ATOMS, ELEMENTS, COMPOUNDS, MIXTURES, SEPARATION and BASIC EARTH SCIENCE - weathering, types of rocks & Rock Cycle"based on QCA 7E to 7H and 8E to 8H SoW-PoS for self-assessment and SATs help or for some basic pre-GCSE revision