Science Quiz 0.0 / 5 ? ChemistryChemistry revisonYears 7-9 (KS3)All boards Created by: gyabaahCreated on: 22-11-20 18:43 What is the test for oxygen gas? a glowing splint will relight 1 of 15 What is the test for hydrogen gas? A burning splint will make a squeaky pop 2 of 15 What is an allotrope? Two or more different physical arrangements of the same atom e.g. diamond graphite,graphene 3 of 15 Name 3 types of solvent that can be used? Water, alcohol and acetone 4 of 15 How are unreactive metals (e.g. gold) removed from their ore? They are native (unreactive so dont form an ore) 5 of 15 How are metals MORE reactive than carbon removed from their ore? Electrolysis 6 of 15 How are metals LESS reactive than carbon removed from their ore They are reduced (reacted with) by carbon 7 of 15 The equation for density mass/volume 8 of 15 Name the structure that ionic bonding forms Giant ionic lattice 9 of 15 Describe what happens in covalent bonding Electrons are shared between atoms=strong electrostatic attraction between electrons and nucleus 10 of 15 Define solvent A liquid in which a solid will dissolve 11 of 15 Define repeatable Performing the same method the same way and getting the same results 12 of 15 State one property of simple covalent molecules 1) Low melting and boiling point 2)Poor conductor of thermal and electrical energy 13 of 15 Name a source of error 1) Start line drawn in ink 2) Solvent above the starting line 3) Dots too close together or too big 14 of 15 For the chromatography experiment Name a control variable 1) Start point of the colour 2) Size of the coloured dot 3) Start point of the solvent 15 of 15
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