1. specific heat capacity
Hydrogen Bonding in Water
Another unique property of water is that it has a very high ______________________. This means that water can _______ and ________ large amounts of _______ as it is heated or cooled. However, these large changes in energy only result in _______ changes in _______________. In other words, water resists changes in temperature.
specific heat capacity
absorb
release
energy
small
temperature

2. Hydrogen Bonding in Water
This is because in before you can make the molecules move _______ the hydrogen bonds between them have to be ___________. Therefore, when you heat water most of the energy actually goes into breaking the hydrogen bonds. Water’s high specific heat helps to stabilize your body’s ______________ and the Earth’s different ____________ within a suitable range for life.
faster
broken
temperature
climates

3. Specific Heat of Water
Specific heat is defined as: the amount of energy needed to raise the temperature of 1 g of a substance by 1ºC. Water has a very high specific heat of 4.184

4. Joules per gram degree celsius
Specific Heat Equation q
Equation
Variable
Units = m Cp ΔT x x
Thermal energy
Specific heat
Change in temp. =
Mass x x J
Joules = °C
Degrees Celsius g
grams x x
Joules per gram degree celsius
Ratio of 3 variables

5. 3 Variable Ratio

6. A Little Chemistry Algebra
Let’s practice some algebraic manipulation of variables! Solve q = m  Cp  ΔT…
Solve for m
Solve for Cp
Solve for ΔT

8. Specific Heat of Water
Specific heat is defined as: the amount of energy needed to raise the temperature of 1 g of a substance by 1ºC. Water has a very high specific heat of 4.184

9. Summary
During the summer the ocean is cold and it takes tremendous energy from the sun all winter to heat it up by the end summer time.
Then all winter long the ocean water is actually warmer on average than the air temperature!
All of that thermal energy is stored by the water, because of hydrogen bonding, taking all winter to cool down again in time for summer when the air starts to get too hot!

11. Summary
Water’s polarity and Hydrogen bonding explains these five unique properties !
High Specific Heat
Surface Tension
Capillary Action
Universal Solvent
Density of Ice

12. Hydrogen Bonds in DNA