Energy Booster (Group 1)

8/13/2019 Energy Booster (Group 1)

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ENERGY BOOSTER !!!

GROUP MEMBERS:

INTAN NURULAMALINA BT AHMAD SAPAR (M20131000655)

NOOR HANANI BINTI ROSLAN (M20122001557)

SALINATUL SAADIAH BT SAAT (M20131000622)SITI MAISARAH BT MOHAMED SUFIAN (M20131000620)

SITI ROHANI BT MAT LAZIM (M20131000624)


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BACKGROUND INFORMATION

Food is a source of energy.

Energy is stored in the chemical bonds of carbohydrates, fats, andproteins in food.

The energy value of food is defined as the energy produced when1 gram of food is completely burned.

Unit: (J/g) or (kJ/g).

When the food is burned, it releases most of its energy in the formof heat.

Energy value can be calculated by the following formula:

Energy value = mass of water (g) x temperature rise (C) x 4.2 J/g C

mass of food (g)


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ENGAGE

Figure above show 3 types of nuts. Rank the nuts accordingly in

ascending order energy level. Explain your answer.

.

Answer:

Cashew nutalmondgroundnut

Cashew nut has lower energy compared to almond and groundnut. While

groundnut has the highest energy value, because it is rich in protein

compared to others. Thus, it will provide more energy.


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EMPOWER


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PHOTOS

Experimental set up


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Results

Almond


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Continue

Cashew nut


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Continue

Groundnut


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Analysis

0.0

10.0

20.0

30.0

40.0

50.0

60.070.0

80.0

90.0

100.0

1 11 21 31 41 51 61 71 81 91 101

Temperature

The graph of Temperature against Time

Cashew nut Almond Groundnut


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Calculation

Energy value = mass of water (g) x temperature rise (C) x 4.2 J/g Cmass of food (g)

Type offood

Mass ofwater

(g)

Initial massof food

(g)

InitialTemperature

(C)

FinalTemperature

(C)

DifferentialTemperature

(C)

Calories

Value formass of food

used (J)

Calorie valuefor 1g of

food (J)

Cashew nut 10 0.561 24.564 86.129 61.565 8609.1 8,215.9

Almond 10 0.439 23.550 74.036 50.486 4830.1 11,002.5

Groundnut 10 0.200 23.144 43.144 20.000 4200.0 21,000.0


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Graph from spreadsheet

8215.9

11002.5

21000.0

0.0

5000.0

10000.0

15000.0

20000.0

25000.0

Cashew Nut Almond Ground Nut

Calorie value for 1g of food (J)

Calorie value for 1g of food (J)


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1) Based on your result, state your observations ontemperature reading during burning of food

sample?

2) Based on your calculation, which food sample has

the highest energy? Explain why?

3) What is the name of the process in living organisms

that released energy from food?

4) Write a word equation for this reaction. Is it thesame as the reaction used in the investigation?

Explain your answer?

5) What do living organisms do with the energy

released from their food?

Questions


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Answers1) Observations:

i. Temperature increases.

ii. The temperature of groundnut is changes from 23.1 O C to 43.1O C,

for cashew nut, changes from 24.5O C to 86.1O C and for almond,

changes from 23.1 O C to 74.0O C .

2) Groundnut because they rich in protein and fat compared to other food

samples that provide higher energy value.

3) The process in living organisms that release energy from food is called

respiration.

4) Carbohydrate + oxygencarbon dioxide + water

It is essentially the same reaction as that in the investigation, becauseboth reactions use oxygen and produce carbon dioxide.

5) Living organisms used the energy released from their food to make new

body tissues (growth and repair) and movement. Some of energy is

transfer to their surroundings as heat.


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ENHANCE

A student has decided to climb Gunung Jerai organized by his

school. This student only allowed to bring a type of food either

energy bar or instant noodle for that climbing. If you were him,

state your choice and explain why you choose that food.


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Answer

If I were that student, I will bring energy bar.

This is because it contains cereal, nut,

chocolate and milk which rich in carbohydrate,

protein and fat that have high calorie toprovide enough energy during climbing.


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Uniquefeatures

Avoid reading

error -getaccurate data

Data can be taken

althoughtemperature rises

very fast

Real time loggingwith graphspresented

simultaneouslywith data

collectionmethod

Energy Booster (Group 1)

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