Science of Water Crossword

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Across

5 passing water beds of sand and gravel (10)

8 common name for calcium carbonate (9)

9 method of removing hardness from water (11)

Down

1 used to split water into its elements. Hoffmann ________________ (10)

2 water that does not form a lather with soap (4)

3 the most common compound on earth (5)

4 used to test for water hardness (4)

6 hardness in water is caused by this ion. (7)

7 soft water forms this with soap (6)

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