WorksheetsSpecific heat conceptual and practice questions
Total questions: 24
Worksheet time: 29mins
The amount of thermal energy required to increase the temperature of 1kg of a material by 1°C.
The amount of radiant energy required to increase the temperature of 1kg of a material by 1°C
The amount of energy required to increase the temperature of 1kg of a material by 1°C.
The amount of friction required to increase the temperature of 1kg of a material by 1°C.
Which will heat up slower?
water
lead
granite
iron
Which will heat up faster?
copper
granite
iron
basalt
The specific heat of platinum is 0.133 J/g°C. How much heat(Q) is released when a 10 g piece of platinum cools from 100°C to 50°C?
66.5 J
665 J
0.0266 J
0.665 J
20 g of water. specific heat of water is 4.18 J/g°C. temperature changes from 25° C to 20° C, how much heat energy (Q) moves from the water to the surroundings?
418 J
209 J
83 J
4.18 J
The specific heat(c) of copper is 390 J/kg °C. What is the temperature change(∆t) when 100 Joules of heat(Q) is added to 20 grams?
12.82 °C
24.12°C
1.95 °C
5128 °C
A pot of 2400g of water at a temperature of 25˚C is heated on a stove until the water boils (100˚C). The specific heat of water is 4180 J/(kg˚C). Determine the heat energy needed to heat the water in the pot to boiling.
133.76J
43,062.2J
752,400J
1,003,200J
10 kg of aluminium is heated from 120C to 220C. How much energy is needed?
8 970 000 J
897 J
8970 J
89 700 J
897 000J
A piece of silver is heated to 87.36 oC and dumped into a calorimeter containing 65.86 g of water at a temperature of 24.03 oC. Calculate the mass of this silver sample if the final temperature of the silver and water together 28.69 oC.
(Cp (silver) = .2350 J/g * oC)
93.11 g
48.26 g
110.6 g
86.5 g
Water has specific heat capacity of 4180 J/kgoC and Lead has specific heat capacity 128 J/kgoC. Assume 1 kg of water and 1 kg of Lead are at 50oC. Which material would take longer to cool down to room temperature?
Water
Lead
Both would cool down at same rate
Impossible to tell
2kg of water and 4 kg of water are heated to the same temperature. Which is true
They both require the same amount of energy
2kg needs twice as much energy than the 4kg
4kg needs twice the energy the 2kg needs
4kg needs 4 times the energy the 2kg needs
The 2kg is hotter
2 kg of glass at a temperature of 20°C is given 84 000 J. What is the final temperature?
+50°C
-50°C
-30°C
70°C
20°C
2 kg of glass is given 84 000 J. What is the change in temperature?
+50°C
-50°C
0°C
+100°C
-100°C
The following results were obtained in an experiment to determine the specific heat capacity of water.
Mass of water = 0.5 kg, temperature rise = 8.2 K, time = 360s, power rating of heater = 50W.
Is the value higher or lower than the true specific heat capacity of water (4200 Jkg-1 K-1 and why?)
A 2kg block of metal at 650°C is dropped into 10kg of a liquid at 30°C. What is the final temperature of the mixture?
[The specific heat capacity of the metal = 500 J/kg K
The specific heat capacity of the liquid = 3000 J/ kg K]
When an electric heater is supplied with an electric power of 2.0 kW to heat 4.0 kg of water for 1 minute, calculate the increase in temperature of the water. Assume that the specific heat capacity of water is 4200 J kg-1 0C-1 and there is no heat loss to the surroundings.
3.050C
7.10C
140C
300C
