Hard and soft water

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

Clues

  • __ hard water remains __ upon boiling? (9, 4)
  • Hard water can __ strength of bones and teeth? (8)
  • Hard water can lead to __ risk of heart disease? (7)
  • 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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