Essays /

1234567789 Essay

Essay preview

How much energy is there in food?
The purpose of this activity is:
to carry out a procedure that releases energy from food and captures some of it in water to record results carefully and calculated the energy released to evaluate this procedure as a method for estimating the energy content of food. Procedure

SAFETY:
Make sure you tell your teacher if you have any food allergies and make sure those foods are not being tested today. If you start to feel ill during this activity, inform your teacher immediately. Wear eye protection while heating the foods.

Take care with mounted needles – especially as you are impaling food on them. Investigation
a Use the measuring cylinder to measure 20 cm3 of water into the boiling tube. b Clamp the boiling tube to the clamp stand.

c Measure the temperature of the water with the thermometer. Record the temperature in a suitable results table. d Choose a piece of food and find its mass using the balance. Record the mass in the table. e Impale the piece of food carefully on a mounted needle.

f Light the Bunsen burner and hold the f...

Read more

Keywords

1 1000 1234567789 1996 1ºc 2 20 3 4 4.2 5 6 7 8 absorb accur activ alight allergi also although amount anomal answer apparatus averag away b balanc beneath big bodi boil boiling-tub bunsen burn burner burnt c calcul call calorimet capac captur carbohydr carbon care carri catch celsius chang choos clamp class close cm3 coil combust compar complet content cool copper could cylind d degre depend detect differ dioxid discuss e easili encourag energi equat especi essenti estim evalu explain express eye f fat feel find flame food formula foundat fulli g gase give given goe gone gram group growth h heat higher highest hold ill immedi impal improv includ increas inform investig j j/g jacket joul k keep kilojoul kj l larg larger least light like list live look lot lower make mani manufactur mass may mean measur method mix mount movement much must name needl new note nuffield number obtain offici often order organ overcom oxygen packet peopl per pictur piec place possibl procedur process protect protein provid purpos put quantiti question quick quit rais rang rank reach reaction record releas repair repeat replac respir result rich rise safeti scope see show shown similar small smaller soon specif stand start stir stirrer suitabl sure surround tabl take taken teacher tell temperatur test thermomet thing time tissu today transfer tri tube under-estim underestim use valu vessel volum warm water wear well wide word would write