Heat of combustion of a peanut

• Natuur, Leven en Technologie

Heat of combustion of a peanut

In this lesson up you will prepare for the practicum about the combustion of a peanut

Do this lesson up so you know what to expect during the practicum

heat of combustion

The heat of combustion is the heat(energy) that is released when burning a substance. The energy that is stored in a substance is also called the “calorific value”. 

Food is a source that contains a lot of energy. By burning food inside your body you can use that energy. The unit for energy stored in food is ' calorie'  

What is another unit we use for energy, apart from calories

How much calories does a average man need a day?

1. 1000-1500 cal
2. 1500-2000 cal
3. 2000-2500 cal
4. 2500-3000 cal

in the practical assignment of this week we will be burning a peanut to see how much energy is stored in it.
After lighting the peanut, it will burn on its own. How do we call this reaction?

1. endothermic reaction
2. exothermic reaction

Items we will be using during practicum

Glass beaker

100 mL water

Scale

Thermometer 

Skewer

Peanut (without peel)

Matches

Bunsen burner

Tripod + wire gauze

What is a skewer?

1. 
2. 
3. 
4. 

What is this item called?

1. Bunsen burner
2. Scale
3. Thermometer
4. Register

What is this instrument
called

1. Tripod
2. Roster
3. Wire Gauze
4. Scale

What safety precausions must you always take in the lab

1. wear safety goggles
2. wear a closed labcoat
3. put your hair back
4. all of them

What is the unit for temperature we mostly use?

1. Fahrenheit
2. Celsius
3. Kilogram
4. Meter

What do we measure in g.?

1. weight
2. mass
3. temperature
4. gravity

The end

Good luck with the experiment

Always work safely (grasses on, lab-coat on and hair tied back)

Ask questions if you don't understand