Chemistry

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

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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