Chemistry Calorimetry

The SI unit of heat and energy is the __________.

• calorie
• heat
• joule
• watt

 How many joules of heat are needed to raise the temperature of 10.0 g of aluminum from 22°C to 55°C, if the specific heat of aluminum is 0.90 J/g°C?    

• 297 Joules
• 0.003 Joules
• 297 J/g°C
• 0.003 J/g°C

Tags

NGSS.HS-PS3-1

The specific heat of copper is 0.39 J/g °C. What is the temperature change(∆t) when 100 Joules of heat is added to 20 grams?

• 12.82 °C
• 24.12°C
• 351 °C

Tags

NGSS.HS-PS3-1

The specific heat of aluminum is 0.21 J/g°C.  How much heat is released when a 10 g piece of aluminum foil is taken out of the oven and cools from 100° to 50°?

• 105 J
• 10.5 J
• 1.05 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C.  Calculate the specific heat capacity of iron.    

• 0.46 J/g^oC
• 1.654 J/g^oC
• 2,567,446.875 J/g^oC

Tags

NGSS.HS-PS3-4

A 0.3 g piece of copper is heated and fashioned into a bracelet.  The amount of energy transferred by heat to the copper is 66,300 J.  If the specific heat of copper is 390 J/g°C, what Is the change of the copper's temperature? 

• 566.7 °C
• 77,571,000 Joules

Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using the same thermal energy.  What material would be the coolest after being heated?

• Copper
• Carbon Steel
• Zinc
• Stainless Steel

Tags

NGSS.HS-PS3-4

A student conducts an experiment to determine the specific heat of a substance. The student uses a water bath to increase the temperature of a metal by 50^°C. He then placed the metal in a cup with 100 mL of water and the temperature of the water rose by 10°C. If the metal had a mass of 33 grams, and 836.55 Joules of energy was released what is the specific heat of the metal?

• 2.535 J/g^°C
• 4184 J/g^°C
• 1650 J/g^°C
• 3.3 J/g^°C

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

What phase of matter is illustrated in "C"

• solid
• liquid
• gas
• melting

Tags

NGSS.MS-PS1-4

What is labeled "E" on the graph?

• solids
• liquids
• gases
• a phase change

Tags

NGSS.MS-PS1-4