Chemistry

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

Clues

  • Carbon dioxide, methane and water vapour are examples of what? (10, 5)
  • 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)
  • What gas did the earth's early atmosphere mainly contain? (6, 7)
  • What gas dissolves in rainwater to form acid rain? (6, 7)
  • What process released oxygen, forming our atmosphere today? (14)
  • What term is used to describe a process that does not add carbon to the atmosphere because amount released is equal to amount removed? (6, 7)

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