Hard and soft water

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

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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