Science Study Guide
Study for Science!
4.9 - Acidification Test
- Carbon Dioxide
- Sulfur
- Hydrogen Chloride
Acidification of Water
- Phenol red changes color as you add carbon dioxide into water
- the carbon dioxide turns into carbonic acid lowers ph and dissolves calcium faster
OCEAN ACIDIFICATION:
- The oceans ph has decreased 0.1
- about 25% drop in ph
- This lower ph will cause shelled animals (shrimp, mollusks, etc.) to not be able to build a shell
Sulfuric Acid
Sulfuric Acid
- Discovered in the 8th century by Alchemist - Alchemy "Chemistry"
- Uses:
- it is used in lead acid batteries
- fertilizers
- steel industry
- and.. dried fruit
LABS! 2 Gases and Acidification of Water!
- Collect and compare the gases produced by the reaction of sulfuric acid with both pure magnesium and magnesium carbonate
- Magnesium and Acid
- Upright: whistles
- Inverted: popped
- Magnesium Carbonate and Acid
- Upright: Stayed lit
- Inverted: Went out
-Air
- Upright: went out at a slow speed
- Inverted: Burned out fast
Acidification of Water
- determine if we can change the acidity of water by dissolving carbon dioxide from out lungs
- Phenol Red in Water
- Hot pink
- With Carbon Dioxide over Water
- Orange
- With Carbon Dioxide in water
- Yelllow
SCIENCE TEST
Water Drop
Aquifer
Limestone
SCIENCE
Sink Holes and Limestone
- porous (holds water)
- soft
- soluble in water (carbonic acid)
FLORIDA sinkholes are very common because...
- There is a lot of limestone
- There are underground caves submerged in water (aquifer)
Why are there soft calcium deposits (dead animals)?
- the ocean once covered us!