1. Specific Heat Capacity

2. Drum Roll please….
Winners from our Thermos Challenge determined by the judges are:
701:
3rd Place: Kate (The Hot and Cold)
2nd Place: Tyler (The Quarter Litre Flask)
1st Place: Matheas (Heat-o-Tron 9000)
Honourable Mentions: Matthew (The X model); Jayden/Ty/Jayden (The Prothermos); Aicha/Maya ( The Burst of Heat)
702:
3rd Place: Jun/Maximo (Thermol)
2nd Place: Julia/Saeyoon (Robotomos)
1st Place: Rudy (The Heavy Weight)
Honorourable Mentions: Elizabeth (Warmus Thermos); Emma (Frigid & Fiery); Tobias (Thermosatron 3000)

3. Calculating Thermos Efficiency
Given in °C/min
Calculation: °Cfinal - °Cinital = -____°C/min
total time (mins)
Ex: (65°C-78°C)= -13°C = -0.43°C/min
30 mins 30m
Please show this calculation on the back of your Thermos testing sheet- hand in brochure/testing sheet with name on it to pass in bin!
Thermos can be taken home Tuesday!

4. What is Heat Capacity?
Heat Capacity: a number that tells you how much thermal energy must be added to the object to make its temperature increase by 1°C
Large (#)= large amount of heat is required to make its temperature increase a little (eg: water)
Small (#)= small amount of heat is required to make its temperature increase (eg: sand)

5. Specific Heat Capacity
Temperature change depends on how much of material you are trying to heat up
Specific Heat Capacity: the amount of energy you must add to a standard amount of a material (1g or 1Kg) to increase its temperature by 1°C)

6. Example: Copper and Water
Specific Heat Capacity of Cu: 0.39J/gºC
It takes 0.39J (J=joules, a measurement of energy) to warm 1g of copper 1ºC
To warm it by 2ºC you need 2x0.39J=0.78J
Specific heat capacity of water: 4.186J/gºC
It takes 4.186J of energy to warm 1g of water 1ºC

7. Specific Heat Capacity- Water
Water has a high heat capacity, so it can store a lot of heat, and it takes a long time to heat up (compared to other substances) and a long time to cool off
In other words, water can absorb a lot of heat without raising its temperature very much (good as a cooling system of engines/other systems)

8. Specific Heat Capacity of Common Materials

9. To Quote Rhianna: Work, Work, Work, Work, Work, Work
Hot Stuff! Think About it! Worksheet:
Answer questions on separate piece of paper (Corrected as a class)
ICA: Specific Heat Capacity
To be done on your own- put in pass in bin with name on it when completed