5.4 Flashcards
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What is cohesion?
Bonding between H2O molecules
What is adhesion?
Bonding between H2O and other substances
What is a solvent?
What is dissolved in
What is specific heat?
Energy it takes to heat 1g of substance by 1 degree Celsius.
What is heat of vaporization?
energy it takes to for 1g of water to evaporate.
What is concentration?
solute/volume
What is pH?
Potential hydronium
What is pOH?
Potential hydroxide
What is a hydroxide ion?
H3O
What is a hydronium ion?
OH
What is acid?
More hydronium (H3O)
What is base?
More hydroxide (OH)
What are the five properties of water?
Cohesion and adhesion; water is a solvent; ice is less dense than liquid water; high specific heat; and heat of vaporization
How does hydrogen bonds/polarity give water cohesion and adhesion and why is it important for life?
Polarity allows it to form strong bonds. It allows plants to take up water and water bugs to walk on water.
How does hydrogen bonds/polarity give water a solvent property and why is it important for life?
The polarity makes water strong and allows it to bond with solutes. Dissolving in water is easier to transport.
How does hydrogen bonds/polarity give water the ability to be more dense as a liquid than as a solid and why is it important for life?
Bonds are stable in ice. It allows warm and cold water to cycle.
How does hydrogen bonds/polarity give water high specific heat and why is it important for life?
It resists change in temperature and keeps an area a general temperature.
How does hydrogen bonds/polarity give water heat of vaporization and why is it important for life?
Hydrogen bonds have to break, allows organisms to sweat.
What’s the pH when the [H3O+] is 10^-6
6
What’s the [H3O+] when the pH is 4?
10^-4
What’s the pOH when the [OH] is 10^-8
8
What’s the [OH] when the pOH is 3?
10^-3
If the pH is 12, what is it?
Base
If the pH is 7, what is it?
Neutral
If the pH is 1, what is it?
Acid
