1. acid
having no preference or tendency
to move one way or the other, neither
acid nor base
2. base
a charged atom or group of atoms
3. indicator
a substance used to show a
change in chemical conditions
a compound that yields hydronium
4. ion
ions in water
a white powder used in testing
5. litmus
acids and bases
a blue coloring matter obtained
6. neutral
from certain plants
a chemical species that releases
7. phenolphthalein
hydroxide ions