Chemistry

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

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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