Chemistry

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N B Y E C A R B O N M O N O X I D E E U E
B B W S E D I M E N T A R Y O L B V C B O
S O I T G C J F R C J L U F Y N G F A S T
Y Q G E T X X U I Y S K E Y A V R M L J X
I V S O B G C C W X T O N E E B E J C M V
K R S Q B C A U S X L B W Q M T E C I P L
W W M O R B L A P K M S G J B K N E U K G
S O D I U M C A R B O N A T E S H L M H H
D I O I L Y I Y P N C O Q O O U O B H X I
K R P O Q L U N L A S B V B V L U A Y D I
F O S Y G C M R G J N R M L R F S D D P A
G N U I O G C G O X J A S U N U E A R U B
P S L D A H A F N J J C H P E R G R O C I
T E N D D C R I N J V O U A A D A G X W D
J E R J X I B P C K P R O X S I S E I B E
F D F S V P O Q W K J D A R R O E D D Q D
T I X F Q F N U W J P Y X L S X S O E J T
W N X F L G A A G W T H R L N I P I R S G
W G W T O S T C E V R R H R Q D G B T W Y
I X T X A X E T F G A D D N Q E Q Y V V B
A M N I G H M T H A V F P R J B N J P R N

Clues

  • Carbon dioxide, methane and water vapour are examples of what? (10, 5)
  • Crude oil is a mixtue of what? (12)
  • Glass is made by heating limestone with sand and what else? (6, 9)
  • I am a gas. I am a product of incomplete combustion, I am colourless, odourless, toxic and can reduce the oxygen carrying ability of red blood cells. What am I? (6, 8)
  • If water is added to calcium oxide, what is formed? (7, 9)
  • Marble, chalk and limestone are natural forms of what? (7, 9)
  • Most polymers persist in landfill sites because they are not... (13)
  • Name the following process that reduces the amount of carbon dioxide in the air: iron is added to oceans, plants grow and photosynthesise, sea creatures eat plants then die and sink to ocean floor, their carbonate shells are buried. (4, 7)
  • What gas dissolves in rainwater to form acid rain? (6, 7)
  • What kind of rock are chalk and limestone examples of: sedimentary, igneous or metamorphic (11)

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