CORE PRACTICAL - testing food energy with a calorimeter - SB1 Flashcards
1
Q
what does a calorimeter do?
A
it measures the amount of energy in a food by burning it in a machine
2
Q
what unit is energy measured in?
A
joules (J)
3
Q
what is the purpose of a calorimeter and what does it tell you?
A
it measures how much energy there is by how much heat is released by food. the more heat = more energy
4
Q
how can the energy be calculated?
A
the amount of energy transferred from burning food can be calculated from the increase in water temperature
5
Q
what apparatus is needed to form the experiment
A
thermometer, stirrer, clamp, calorimeter (+ water and burning food)
6
Q
what does the energy transfer into to be recorded?
A
heat
7
Q
what can be told about a sample with a lot of energy?
A
it probably is a lipid (they contain more energy)
