General Water Chemistry
Ocean Acidification
Density
Salinity
Mixed Bag
100
What three states does water exist in?
What is liquid, gas, solid
100
Ocean acidification is caused by this gas, which is created when we burn fossil fuels.
What is carbon dioxide
100
The unit for density is
What is g/ml or g/cm3
100
salinity is how many grams of salt per _________ml of water
What is 1000
100
Sodium (Na) has a ______ charge
What is positive
200
The bond formed between two water molecules and designated by a dashed in is.
What is hydrogen bond
200
The pH meter measures
What is loose H+ ions
200
An object will float if it has a density of
What is less than 1 g/ml
200
as salinity increase density ________________
What is increases
200
The chemical formula for calcium carbonate is
What is CaCO3
300
A special type of covalent bond formed when the oxygen pull the electron closer to itself
What is polar covalent
300
What is the chemical formula for carbonic acid?
What is H2CO3
300
If an objects mass is 20 grams and has a volume of 10 cm3 what is the density?
What is 2 g/ml or 2 g/cm3
300
There are 50 grams of salt in 1000 ml of water the salinity is ____________o/oo
What is increases 50 o/oo
300
Where does salt in the ocean come from
What is rain/precipitation.
400
Explain what happens to cohesion as you add salt to water.
What is decrease in H bonding because the water molecules bond with the Na or Cl instead of each other
400
As the number of H+ goes _______ the pH will go ____________.
What is up-->down OR down -->up
400
If you double the mass but not the volume how will the density change (be specific, not just up/down)
The density will double.
400
There are 55 grams of salt in 500 ml of water the salinity is _____________o/oo
What is 110 o/oo
400
This type of bond is formed when one atom completely steals an electron from another atom.
What is ionic bond
500
Water dissolving or breaking apart salt is known as
What is ionization
500
If plant like organisms are added to water explain how that would affect the number of H+ ions being created.
Less CO2 means less H2CO3 = Less H+ ions
500
A box measures 2cmx2cmx2cm and has a weight of .008kg what is the density
What is 1g/cm3
500
If you need to make a solution that was 24.2 o/oo and you had 500 ml of water how much salt would you need
What is 12.1 g of salt
500
The three most important gasses in water are
What is nitrogen, oxygen, and carbon dioxide
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