Thermodynamics/Energetics

For the formula:
 Q= m c ∆T
The  units for specific heat are:

• g /J C
• °C/g J
• kJ/g
• J/g°C

What would be the effect on the particles if more heat is supplied to the system?

• They would slow down
• They would stop moving
• They would speed up
• There would be no effect

Thermal energy ALWAYS moves from _____ to _____.

• solid to liquid
• ice to water
• hot to cold
• solid to gas

Tags

NGSS.HS-PS3-4

The movement of thermal energy from an object at a higher temperature to an object at a lower temperature is called ____________.

• thermal
• expansion
• temperature
• heat

Tags

NGSS.HS-PS3-4

Water molecules have the greatest kinetic energy in
________________

• Ice at 0 °C.
• Water at 373 K.
• Water at 98 °C
• Steam at 150 °C.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A high specific heat means...

• It heats up quickly with energy added
• It requires more energy to change temperature

A metal cube at temperature of 10°C immersed in a liquid at temperature of 70°C.
What is the temperature of the metal cube when thermal equilibrium is achieved between the cube and the liquid?

• Between 10°C and 70°C
• More than 70°C
• Less than 10°C
• Same as the room temperature

Tags

NGSS.HS-PS3-4

There are four cups of hot cocoa. The cup sizes are shown. The temperature of the cocoa in each cup is 25 degrees celsius. Which cup has the MOST heat?

• Large cup (Trenta)

• Small cup (Tall)

• Venti

• All three are the same temperature so they have same heat.

Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using 10,000 JOULES of thermal energy. Based on the chart, which material would have the SMALLEST change in temperature?

• Copper

• Carbon Steel

• Zinc

• Stainless Steel

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

A metal cube with a mass of 55grams at temperature of 85°C is immersed in 150grams of water at temperature of 20°C. The metal and water then reach a final temperature of 23^oC. How much heat does the water gain?

• 1881 J

• 690 J

• 14253 J

• 38874 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4