Calorimetry lab and basic thermochemistry

Main ingredient is?  

• corn
• corn oil 
• salt
• frito

How many grams of sugar in 1 poptart? 

• 170
• 34
• 15
• less than 2%

How many calories in a can of Mountain Dew?

• 170
• 45
• 12 oz
• 355

Which of the following items does not contribute to the amount of calories in food?

• Vitamins

• Protein

• Carbohydrates

• Fat

Calorimetry is the measurement of the ___________

(Choose the best answer below.)

• transfer of heat into or out of a system (reaction/process)

• change in temperature

• amount of energy required to raise the temperature of 1 gram of the substance by 1°C.

• change in the mass of a substance throughout a reaction.

• energy

• Change in temperature

• specific heat

• mass

• energy

• Change in temperature

• specific heat

• mass

Q = mCpΔT, m   is....

• energy

• Change in temperature

• specific heat

• mass

How does heat flow?

• Always from cold to warm
• Always from warm to cold
• Both warm to cold & cold to warm
• It depends on the temperature

The Law of Conservation of Energy states:

• Energy can created or destroyed but not transformed 
• Energy cannot be created or destroyed, it can only transformed
• Energy can't be created, destroyed or transformed