Chemistry 3.7 Aqueous revision crossword

Crossword

Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
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Across:

2. An acid is a proton ___.
4. When stoichiometric amounts of acid and base are present the titration is at its ___ point.
6. The most common unit for solubility is ___ per ___.
8. The larger the pKa the ___ the acid.
10. A saturated solution is in ___ with undissolved solid.
11. The larger the Ka the ___ the acid.
14. ___ substances can either donate or accept protons.
16. A base is a proton ___.
17. When buffer solutions are ___ the pH remains constant.
19. Strong acids or bases ___ completely
20. Salts of weak acids or bases ___ in water to form solutions which are not neutral.
21. Buffer solutions contain a mixture of a ___ acid (or base) and its conjugate base (or acid)
22. Weak acids and bases are only ___ dissociated.
24. When we remove a proton from an acid we form its ___ base.
25. The salts of weak acids will be slightly ___.

Down:

1. Ka is known as the acid ___ constant.
2. The solubility of an ionic compound ___ in a solution containing a common ion.
3. A ___ solution is one which resists changes in pH caused by addition of moderate amounts of acid or base.
5. If the ionic product is ___ than the solubility product, then a precipitate will form.
7. The equivalence point is at the midpoint of the ___ part of a pH titration curve.
9. When writing equilibrium equations for solubility, always put the solid on the ___.
12. Ks – the ___ product – is the equilibrium constant for a saturated solution.
13. Soluble substances have ___ solubility products.
15. In a buffer solution, if [HA} = {A–], then __ = pKa.
18. Choose an ___ for a pH titration which changes colour closest to the pH at the equivalence point.
22. Acid-base indicators change colour when the pH of the solution is equal to the ___ of the indicator.
23. The ___ product is the same as the expression for Ks but applies when the system is not in equilibrium.