Specific Heat and Thermochemistry Test

Knowing that its specific heat capacity is 4.18 J/(g•°C), how much would the temperature of 16.0 g of pure water increase by when 670. Joules of heat are applied?

• 0.000390°C
• 0.0998°C
• 10.0°C
• 44800°C

Tags

NGSS.HS-PS3-4

Which one of the following is an exothermic process?

• condensation of water vapor
• boiling soup
• water evaporating
• ice melting

What is the specific heat of a substance if 373 J is required to raise the temperature of a 312 g sample by 15°C?

• 0.237 J/(g•°C)
• 0.0558 J/(g•°C)
• 0.0797 J/(g•°C)
• 0.318 J/(g•°C)

Which one of the following is NOT a change in state of matter (or phase)?

• vaporization
• melting
• freezing
• fission

Tags

NGSS.MS-PS1-4

The reaction
4 Al (s)  +  3 O2 (g)  →  2 Al2O3 (s)     
ΔH° = -3351 kJ
causes the temperature of its surroundings to increase.  This reaction is __________, and therefore heat is __________ by the reaction.

• exothermic, released
• exothermic, absorbed
• endothermic, released
• endothermic, absorbed

Tags

NGSS.HS-PS1-4

The specific heat capacity of lead is 0.13 J/(g•°C).  How much heat (in J) is required to raise the temperature of 15 g of lead from 22°C to 37°C?

• 5.8 x 10-4 J
• 0.13 J
• 2.0 J
• 29 J

Tags

NGSS.HS-PS3-1

The specific heat of liquid bromine is 0.226 J/(g•°C).  How much heat (J) is required to raise the temperature of 31.2 g of bromine from 25.00°C to 27.30°C?

• 10.4 J
• 32.4 J
• 16.2 J
• 5.20 J
  

Tags

NGSS.HS-PS3-4

A sample of aluminum metal absorbs 9.86 J of heat, upon which the temperature of the sample increases from 23.2°C to 30.5°C.  Since the specific heat capacity of aluminum is 0.90 J/(g•°C), the mass of the sample is:

• 8.1 g
• 1.5 g
• 65 g
• 72 g

Hot coffee is poured into a cold stream.  Which of the following statements is correct?

• The stream loses heat; the coffee absorbs heat.
• The stream absorbs heat; the coffee loses heat.
• Both the stream and the coffee lose heat; neither gains it.
• Both the stream and the coffee gain heat; neither loses it.

Tags

NGSS.HS-PS3-4

The internal energy of a system is always increased by:

• withdrawing heat from the system
• having the system do work on the surroundings
• a volume compression
• adding heat to the system