4.9 to Acidification lab
-Pores
-hold H20 together
-Soft
-Soluble in H20 (Carbonic Acid)
Why do Sinkholes occur in Florida:
Lots of Limestone
-Water underground (aquifer)
-once covered with ocean ->
-Soft Calcium deposits (dead animals)
Characteristics of Ocean Acidification:
Ocean Ph is around 18.1-18.4
Ocean's Ph has decreased 0.1
Lower ocean Ph means sea animals w shells will not be able to make a shell
Sulfuric Acid Notes:
Discovered in 8th century by alchemist (Alchemy)
Lead into gold
Chemistry
Acid is used for:
Lead acid batteries
Fertilizers
Steel industry (prevents rust corrosion)
Dried fruit production (Hydrotropic)
Magnesium Carbonate Acid
CO2 dense gas --> sinks
Downward Tube:
-Filled w air and gas escapes
Magnesium and Acid
Hydrogen (H) ; light gas (rises)
Upright Tube:
-Filled w air and gas escapes
Downward Tube:
-Filled with hydrogen and gas cannot escape
Upright Tube:
-Filled w CO2 and gas cannot escape
Hear pop!
-Gas is ignited and rushes out of test tube and it rubs against glass which causes friction
Downward Test Tub
Flammable gas escapes
Acidification Notes Post Lab:
-Phenol red changes color as you add CO2 into H20
-The CO2 turns to carbonic acid lowering the Ph of the H20
-Calcium tablet is more soluble in cup w straw
-Because the Carbonic acid lower the Ph and dissolves calcium faster
Characteristics of Ocean Acidification:
Ocean Ph is around 18.1-18.4
Ocean's Ph has decreased 0.1
Lower ocean Ph means sea animals w shells will not be able to make a shell