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There are four main processes in changing of phase, and they are

• Melting

• Boiling

• Condensation

• All the above

Water molecules have the greatest kinetic energy in

• Ice at 0 ⁰C

• Water at 90 ⁰C

• Water at 373 K

• Steam at 150 ⁰C

The amount of energy required to raise the temperature 1ºC for every kilogram is called____?

• Thermal Energy
• Specific Heat Capacity

• Temperature
• Kinetic Energy

Water has a specific heat of 4184 J/(kg ºC).  

Wood has a specific heat of 1760 J/(kg ºC).  

What material needs more energy to raise the temperature 1 ºC

• Wood
• Water
• Both are the same

If I heat up 2 pans of water one has 100 mL in it and one has 1000 mL.

Which one heats up the fastest?

• 100 mL
• 1000 mL
• They both heat up at the same speed
• They cool down.

How much energy is needed to raise the temperature of 5.0 grams of lead from 25°C to 35°C?

[specific heat capacity of lead = 0.129 J/(g °C)]

• 6.45 J/(g•°C)

• 6.45 J

• 16.1 J/(g•°C)

• d.16.1 J

Which of the following best explains why the sand at the beach is hotter than the water?

• Sand has a higher specific heat than water.

• Sand has a lower specific heat than water.

• There is more water than sand at the beach.

• There is more sand than water at the beach.

There are four cups of hot cocoa. The cup sizes are shown. The temperature of the cocoa in each cup is 25 degree Celsius.

Which cup has the MOST thermal energy?

• Large cup (Trenta)
• Small cup (Tall)
• Venti
• All three are the same temperature so they have same thermal energy

The specific heat capacity (c) of copper is 0.39 J/g °C.

What is the temperature change(∆T) when 100 Joules of heat(Q) is added to 20 grams of copper?

• 12.82 °C
• 24.12°C
• 351 °C

The graph shows the temperature of 1 kg samples of three materials, A, B, and C, as they are heated. Heating occurs at a constant rate.

If material A starts to melt at 60 ^oC. At that point, the line on the graph will __________.

• continue on as before

• begin to curve upward

• become steeper

• become horizontal