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
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Slide 1: Diapositive
Natuur, Leven en Technologie
Cette leçon contient 14 diapositives, avec quiz interactifs, diapositives de texte et 1 vidéo.
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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
Slide 1 - Diapositive
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'
Slide 2 - Diapositive
What is another unit we use for energy, apart from calories
Slide 3 - Question ouverte
Slide 4 - Vidéo
How much calories does a average man need a day?
A
1000-1500 cal
B
1500-2000 cal
C
2000-2500 cal
D
2500-3000 cal
Slide 5 - Quiz
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?
A
endothermic reaction
B
exothermic reaction
Slide 6 - Quiz
Items we will be using during practicum
Glass beaker
100 mL water
Scale
Thermometer
Skewer
Peanut (without peel)
Matches
Bunsen burner
Tripod + wire gauze
Slide 7 - Diapositive
What is a skewer?
A
B
C
D
Slide 8 - Quiz
What is this item called?
A
Bunsen burner
B
Scale
C
Thermometer
D
Register
Slide 9 - Quiz
What is this instrument called
A
Tripod
B
Roster
C
Wire Gauze
D
Scale
Slide 10 - Quiz
What safety precausions must you always take in the lab
A
wear safety goggles
B
wear a closed labcoat
C
put your hair back
D
all of them
Slide 11 - Quiz
What is the unit for temperature we mostly use?
A
Fahrenheit
B
Celsius
C
Kilogram
D
Meter
Slide 12 - Quiz
What do we measure in g.?
A
weight
B
mass
C
temperature
D
gravity
Slide 13 - Quiz
The end
Good luck with the experiment
Always work safely (grasses on, lab-coat on and hair tied back)