Chemistry

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

Clues

  • Are positve ions reduced or oxidised? (7)
  • How do you test for hydrogen? (7, 3)
  • What is an example of a metal less reactive than hydrogen? (6)
  • What is formed if the metal ions are more reactive than hydrogen? (8, 4)
  • What is formed when there are no halogen elements? (6)
  • What is the positive electrode? (5)
  • What should the electrodes be so they don't react with the electrolytes? (5)
  • What turns blue litmus paper white? (8)
  • Which electrode do positive ions go to? (7)

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