Energy In Food and food tests Flashcards
1
Q
1 gram of protein provides us with how many joules?
A
17 joules
2
Q
1 gram of fat provides us with how many joules?
A
38 joules
3
Q
How many joules are there in 1 KJ
A
1000 joules
4
Q
Where would we find the energy in food?
A
On food labels
5
Q
What is the equation to work out energy in 1 gram of food?
A
Rise in temperature x volume of water x 4.2
6
Q
How did we test how much energy were in different crisps?
A
We burnt crisps under a Bunsen burner and the energy from the crisp heated up a test tube with a thermometer in it
7
Q
What is energy measured in?
A
J (joules) / KJ (kilojoules)
8
Q
What is the reagent used to test for protein?
A
Dilute sodium hydroxide
