WorksheetsTopic 2: Energy Transfer
Total questions: 19
Worksheet time: 22mins
Which of the following is an example of chemical energy transforming into thermal energy?
Coal is burned to boil wate
Food is digested and used to regulate body temperature.
Food is digested and used to regulate body temperature.
Charcoal is burned in a barbeque pit.
all of the above.
Which of these is not a source of chemical energy?
Spaghetti
The Sun
Battery
Petroleum
Chemical energy can transform into ___.
Thermal Energy
Light (Radiant) Energy
Electrical Energy
All of the above
What is the formula to calculate thermal energy transfer?
q=m x c x ∆T
q=∆m x c x T
q= ½ m xv
m= q x C
Moving particles have ___.
gas
thermal energy
liquid
temperature
What does "ΔT" mean?
A change in health
A change in heat
A change in height
A change in temperature
If ...
m= 4.00 g
c = 0.001 (kcal/g°C)
∆T = 4.00 °C
Calculate thermal energy transfer (q).
1.6 kcal
8 cal
0.02 kcal
1 Cal
You perform a calorimetry experiment.
You notice you have:
m = 10.2 g
c = 0.001 kcal/g °C
ΔT = 8.1 ⁰C
Calculate the thermal energy transfer (q) in your experiment.
1 cal
8 Cal
0.08262 kcal
0.1 kcal
Calculate thermal energy transfer (q) if...
m = 7.50 g
∆T = 7.1 °C
c = 0.001 kcal / g °C
14 cal
0.1 kcal
0.05325 kcal
50 cal
Which of the following are required for combustion to take place?
fuel source
spark of thermal energy
oxygen
all of these
The matter that comes out of a combustion reaction are ___.
Carbon
Carbon monoxide + Water
Carbon dioxide
Water + Carbon Dioxide + Smoke particles
Which term means "the ability to cause change in matter?"
Matter
Heat
Energy
physical change
When a piece of aluminum foil is taken out of the oven and cools from 100°C to 50°C. Calculate the change in temperature.
-50°C
0°C
100°C
50°C
If 200 grams of water is to be heated from 24.0° C to 100.0°C to make a cup of tea, what is the mass and what is the change in temperature?
m=200g
∆T= 66 °C
m=200g
∆T=124°C
m=200g
∆T=100 °C
m=200g
∆T=76 °C
If ...
q = 3.7 kcal
Δmfood = - 0.2 g
Calculate energy transfer per gram of food (Efood).
18.5 kcal / g
-18.5 kcal / g
0.74 kcal g
0.74 kcal
