Mock Revison Quiz Chemistry Year 10 0.0 / 5 ? ChemistrymixedGCSEAQA Created by: MelaniaDCreated on: 15-03-16 18:56 What was the earth's early atmosphere made up of? nitrogen,oxygen and other gases 1 of 36 Where did the early Earth's gases come from? volcanoes' eruptions 2 of 36 How were oceans formed? the steam from the atmosphere was condensed because of the earth that was getting cooler 3 of 36 How does farming affect the atmosphere? castles' release of gases 4 of 36 What is the evidence used by scientists to discover Earth's early atmosphere? composition of rocks, volcanoes' eruptions, glaciers 5 of 36 What are igneous rocks made of? solidified magma or lava 6 of 36 What are metamorphic rocks made of? rocks at high pressure and temperature 7 of 36 What are sedimentary rocks made of? hard parts of marine animals or eroded fragments of molten rock 8 of 36 Give one example of igneous, sedimentary and metamorphic rocks. granite, limestone and marble. 9 of 36 Who discovered what about atoms? Rutherford discovered the positively charged nucleus 10 of 36 What is thermal decomposition? break down using heat 11 of 36 What is titration? common laboratory method used to determine the unknown concentration of a known reactant 12 of 36 How do you test for oxygen? glowing splint relights 13 of 36 How do you test for carbon dioxide? limewater goes cloudy 14 of 36 How do you test for hydrogen? lit splint goes 'pop' 15 of 36 Write a word equation for extracting iron? iron oxide + carbon = carbon dioxide + iron 16 of 36 What is an ore? rock that contains minerals and metal oxides 17 of 36 What is an alloy? metal substance made from a mixture of metals and sometimes non-metals 18 of 36 What are 3 properties of metals? ductility, high melting/boiling point, solid at room temperature 19 of 36 What does Recycling metals mean? Used metals are melted down and made into something new 20 of 36 What are the advantages of recycling metals? metal ores will last longer, less energy required to recycle than to extract, less pollution 21 of 36 What are the disadvantages of recycling metals? energy it takes, non-magnetic metals are hard to separate, expensive 22 of 36 What are hydrocarbons? family of molecules that contain hydrogen and carbon 23 of 36 What are the 1st 3 hydrocarbons? methane, ethane, propane 24 of 36 What is combustion? rapid reaction between a substance and oxygen which releases in heat and light 25 of 36 What is meant by the term 'saturated' ? all atoms are hold together by single bonds 26 of 36 What is soot? hydrocarbon + oxygen = carbon monoxide + carbon + water 27 of 36 What are the consequences of incomplete combustion? sulphur dioxide and oxides of nitrogen dissolve in clouds and cause acid rain 28 of 36 What are some consequences of global warming? flooding, dryer areas, extreme weather 29 of 36 What is Cracking? breaking bigger alkanes into smaller ones 30 of 36 State one disadvantages of biofuels. cut down trees 31 of 36 State one advantage of biofuels? renewable 32 of 36 What are polymers? long chain molecules 33 of 36 What are plastics? long chains made from thousands of atoms 34 of 36 What is polymerisation? linking monomers to make a polymer 35 of 36 Give examples of natural and man-made polymers? silk,rubber and nylon 36 of 36
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