C3.2.1 Hard and Soft Water

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

Clues

  • A piece of equipment that softens water (3, 8, 6)
  • Calcium and Magnesium ions for ppts when ____ softens hard water (6, 9)
  • Contains Calcium and magnesium ions (4, 5)
  • Contains Hydrogencarbonate ions (9, 4, 5)
  • Forms a lather (4, 5)
  • Our water is.... (4)
  • Our water isn't... (4)
  • Seawater is boiled and the vapours cooled to form pure water (12)
  • This reaction (2HCO3 - CO3 + H2O) happens when temporary hard water is boiled. What's the scientific name? (7, 13)

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