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

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg