All foods contain chemical energy, but the amount of chemical energy is dependent of the type of food. the larger the compound, the more chemical bonds present and the greater amount of available chemical energy. we can rank molecule size, from smallest to largest, as sugar, starch, fat. we refer to the stored chemical energy in foods as calories. a calorie is the amount of energy required to raise the temperature of 1 gram of water 1 degree celsius. when we refer to the calories in food, we are really talking about kilocalories or 1000 calories. biology students "burned" 2 grams of food to heat water in a calorimeter in order to determine which food items contain the most usable chemical energy. each group picked two food items to burn. one group chose a saltine and a chip. they hypothesized that the chip with produce a greater change in water temperature when burned. here is the data they collected.
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Biology, 21.06.2019 21:30
Which sentence is an example of a strong conclusion to an autobiography? a. i stayed after school three days in a row to practice onstage in the auditorium. b. i knew i would have to practice all week to memorize my dance for the recital. c. after the recital was over, i knew practicing was worth it, and i was looking forward to my next big challenge. d. on opening night, i danced in front of a packed auditorium.
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Biology, 22.06.2019 05:30
Which gas found in the earth's atmosphere greatly impacts the daily range of temperature on earth. a) oxygen b) hydrogen c) nitrogen d) water vapor
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All foods contain chemical energy, but the amount of chemical energy is dependent of the type of foo...
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