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

Clues

  • acids contain (8)
  • blue litmus paper turns red then white (8)
  • breaking down a compound using direct current (12)
  • brine (4, 5)
  • carbonate/ oxide/ hyrdoxide (5, 5)
  • H2SO4 (9, 4)
  • helps kill bacteria (12, 4)
  • ion (7, 4)
  • soulble base (6)
  • sulphur dioxide (5, 8)

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