Mock Revison Quiz Chemistry Year 10

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

Card 2

Front

Where did the early Earth's gases come from?

Back

volcanoes' eruptions

Card 3

Front

How were oceans formed?

Back

Preview of the front of card 3

Card 4

Front

How does farming affect the atmosphere?

Back

Preview of the front of card 4

Card 5

Front

What is the evidence used by scientists to discover Earth's early atmosphere?

Back

Preview of the front of card 5
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