To Determine The Energy Content in The Sample of Food
To Determine The Energy Content in The Sample of Food
To Determine The Energy Content in The Sample of Food
Problem statement
Which type of food has the highest energy value?
Hypothesis
The final temperature reading/energy value for peanut is higher than bread and biscuit
Variables
MV : type of food
RV : the energy content
CV : volume of distilled water
Procedure
1. white bread weighed and its weight is recorded
2. 20ml distilled water is poured into boiling tube
3. The boiling tube is clamped to the retort stand
4. Initial temperature of water in the boiling tube is recorded
5. The white bread spiked firmly at the end of the pin which is mounted on some plasticine
6. The white bread Ignite by holding it in the flame of a bunsen burner and immediately placed beneath the
boiling tube to heat the water
7. The water stirred gently with the thermometer
8. The final temperature is recorded (highest temperature reached) as soon as the peanut has stopped burning
using thermometer.
9. The energy value of the peanut is calculated using the formula below
Observation
Discussions:
1. State three precautions needed when carrying out this experiment.
Make sure that the nut is completely burnt before reading the temperature.
Make sure that the nut is put as close as possible to the bottom of the boiling tube.
Make sure that the water is stirred before reading the temperature.
3. How can we apply the knowledge of the energy value in our daily lives?
To plan our diets according to our daily needs.
Conclusion:
Hypothesis is accepted. Peanut has the highest increase in temperature/energy value.