Students will learn big questions concerning our environment like why San Francisco is almost always at the same temperature year round whereas Iowa's temperature fluctuates wildly throughout the year. Students will also learn to solve problems involving specific heat and phase change.
Key Equations
1 cal = 4.184 Joules ; your food calorie is actually a kilocalorie (Cal) and equal to 4184 J.
Substance 
Specific Heat, 

Air  6.96 
Water  1.00 
Alcohol  0.580 
Steam  0.497 
Ice 
0.490 
Aluminum  0.215 
Zinc  0.0925 
Brass  0.0907 
Silver  0.0558 
Lead  0.0306 
Gold 
0.0301 
Substance 
Fusion, 
Vaporization, 

Water  80.0  540 
Alcohol  26  210 
Silver  25  556 
Zinc  24  423 
Gold  15  407 
Helium    5.0 
Guidance
 The amount of heat capacitance (and thus its specific heat value) is related to something called ‘degrees of freedom,’ which basically says how free is the object to move in different ways (and thus how much kinetic energy can it store inside itself without breaking apart). For example, solids have a more fixed structure, so they cannot rotate and jostle as much, so they can’t store as much internal energy so they have lower heat capacitance then liquids.

Specific heat is similar to heat capacitance, but is a specific number. The specific heat tells you how much energy one must put in per unit mass in order to raise the temperature
1∘C .  Phase changes: it takes energy to changes phases from a solid to a liquid and from a liquid to a gas. The substance releases energy when changing phase from gas to liquid or from liquid to solid. How much energy per unit mass depends on the substance in question. When you get out of the shower you often feel cold. This is because the water on you is evaporating, and heat is flowing from you to the water droplets in order for them to change phase from water to gas. You are losing heat and thus feel cold.
 A calorie is a unit of energy. The food Calorie, with a capital
C , is actually 1,000 calories (a kcal). Thus, for example, a snicker bar labeled with 200 Cal is actually 200,000 cal.  Food calories are determined by burning the food and measuring the heat released.
 During a phase change, the number of degrees of freedom changes, and so does the specific heat capacity. Heat capacity can also depend on temperature within a given phase, but many substances, under constant pressure, exhibit a constant specific heat over a wide range of temperatures. For instance, here is a graph of temperature vs heat input for a mole (
6.0221415×1023 molecules) of water. Note that the xaxis of the graph is called 'relative heat energy' because it takes a mole of water at 0 degrees Celcius as the reference point.
The sloped segments on the graph represent increases in temperature. The flat segments represent phase transitions, governed by equation for latent heat. Notice that the sloped segments have constant, though different, slopes. According to this equation, the heat capacity at any particular phase would be the slope of the segment that corresponds to that phase on the graph. The fact that the slopes are constant means that, within a particular phase, the heat capacity does not change significantly as a function of temperature. Heat capacity is the amount of internal energy that the substance can store. A large heat capacitance means the substance can store a lot of internal energy and thus the temperature changes slowly. Aluminum foil has a small heat capacitance and water has a large one.
Example 1
A 500 g piece of aluminum metal of unknown temperature is thrown into a cup containing 500 g of water which had an initial temperature of
Solution
The key to this problem is connecting it with conservation of energy. The energy that went into heating up the water must have come from heat stored in the metal. Therefore, we know that the change in energy of the water is equal to however much energy the aluminum lost when it was put into the water. When solving this problem, we'll call the energy of the aluminum
Watch this Explanation
Time for Practice
 Antonio is heating water on the stove to boil eggs for a picnic. How much heat is required to raise the temperature of his 10.0kg vat of water from
20∘C to100∘C ?  Amy wishes to measure the specific heat capacity of a piece of metal. She places the 75g piece of metal in a pan of boiling water, then drops it into a styrofoam cup holding 50 g of water at
22∘C . The metal and water come to an equilibrium temperature of25∘C . Calculate: The heat gained by the water
 The heat lost by the metal
 The specific heat of the metal
 John wishes to heat a cup of water to make some ramen for lunch. His insulated cup holds 200 g of water at
20∘C . He has an immersion heater rated at 1000 W (1000 J/s) to heat the water. How many JOULES of heat are required to heat the water to
100∘C ?  How long will it take to do this with a 1000W heater?
 Convert your answer in part b to minutes.
 How many JOULES of heat are required to heat the water to
 You put a 20g cylinder of aluminum
(c=0.2 cal/g/∘C) in the freezer(T=−10∘C) . You then drop the aluminum cylinder into a cup of water at20∘C . After some time they come to a common temperature of12∘C . How much water was in the cup?  Emily is testing her baby’s bath water and finds that it is too cold, so she adds some hot water from a kettle on the stove. If Emily adds 2.00 kg of water at
80.0∘C to 20.0 kg of bath water at27.0∘C , what is the final temperature of the bath water?  You are trying to find the specific heat of a metal. You heated a metal in an oven to
250∘C . Then you dropped the hot metal immediately into a cup of cold water. To the right is a graph of the temperature of the water versus time that you took in the lab. The mass of the metal is 10g and the mass of the water is 100g. Recall that water has a specific heat of1 cal/g∘C .  How much heat is required to melt a 20 g cube of ice if
 the ice cube is initially at
0∘C  the ice cube is initially at
−20∘C (be sure to use the specific heat of ice)
 the ice cube is initially at
Answers
 800,000 cal or 3360 kJ

A:150 cal (630 J) B: same as a! C:
0.027 cal/g∘C (0.11 J/g∘C)  A: 67,000 J B: 67.2 s C: 1.1 min
 11.0 g

31.8∘C 
0.44 cal/g∘C  A: 1600 cal (6720 J) B: 1800 cal (7560 J)