A STUDY GUIDE for SCIENCE

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A QUIZ. YAYAYAYYAYAYAYYAYAYAY!

Monday, March 16th, 1:45pm

2700 Saint Andrews Boulevard

Boca Raton, FL

STUFF U SHOULD KNOW. YAAAAAAAAAAAAAAAAAAAY

Limestone / Sinkhole Notes

Characteristics



  • Porous
  • Soft
  • Soluble in H2O

They occur because

  • lots of lime stone
  • water underground (aquifer)
  • once covered ocean ----> soft calcium deposits (dead animals)



Sulfuric Acid Notes

Discovered in 8th century by Alchemist ---> alchemy (basically chemistry

Uses


  • lead acid batteries (Cars)
  • fertilizers
  • steel industries
  • dried fruit production (hydrotropic)



Magnesium carbonate and acid


  • was CO2
  • Denser than air



Magnesium and Acid


  • was hydrogen
  • lighter than air
  • very flammable
  • pushes air out when ignited which makes a pop



Acidification Post lab

Phenol Red


  • changes color as CO2 is added to H2O


More Notes

  • the CO2 turns to carbonic acid lowering the ph of H2O
  • calcium tablet is more soluble in cup w/ straw b/c the carbonic acid lowers ph and dissolves calcium faster


Ocean Acidification

Normal Ocean ph is 8.1 - 8.4


  • ocean ph has decreased 0.1 which is 25%
  • lower ocean pH means sea animals w/ shells will not be able to make a shell (crabs, shrimp, clams, ect.)

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