Acids and Bases

1. Used to represent the concentration of acids and bases.
4. A solution with a pH greater than 7 are.
8. Reactant + _____________--------> product(s).
9. What element is found in the Periodic Table in group 2, period 3 ?
11. Solutions with a pH less than 7 are.
13. What turns red in an acidic solution and remains blue when added to an alkali solution?.
16. Elements on the Periodic Table are placed in order according to their.
18. The minimum amount of energy required for a chemical reaction to proceed is called
20. The pH of distilled water.

2. Cutting or grinding up a reactant increases this.
3. Outermost level in the electron arrangement.
5. The acid found in lemons and oranges.
6. A special chemical that speeds up the rate of a reaction but are not used up in that reaction.
7. This element is given the chemical symbol 'K'.
10. Very small particle that exists outside the centre (nucleus) of the atom.
12. What affects the speed of particles.
14. A positive ion.
15. What element is found in the Periodic Table in group 11, period 5?
17. The gas produced when an acid reacts with a metal.
19. A negative ion.