Hard and soft water

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

Clues

  • __ hard water remains __ upon boiling? (9, 4)
  • Commercial water softener a contain an __? (3, 8, 6)
  • Hard water can __ strength of bones and teeth? (8)
  • Hard water contains __ and __ ions? (9, 3, 6)
  • Hard water does not form a __ with soap easily so more soap is required which is __? (6, 9)
  • Hydrogencarbonate ions __ upon heating to product __ ions? (9, 9)
  • Temporary hard water builds up __ inside kettles and heating systems which reduces their __? (5, 10)
  • Temporary hard water contains __ ions? (17)
  • The column supplies __ or __ ions? (8, 6)
  • These carbonate ions react with magnesium/calcium ions to form a __? (11)

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