폭탄 열량계 시뮬레이션

열량 측정으로 식품의 에너지 함량 측정하기

Thermochemistry Intermediate (High School) 45 분 ~$10.00

목표

다양한 식품을 연소시키고 물로의 열 이동을 측정하여 에너지(칼로리) 함량을 측정한다.

배경

A simple food calorimeter uses the heat from burning food to raise the temperature of water. By measuring the mass of food burned and the temperature rise of the water, the energy content can be calculated. This demonstrates why some foods have more calories than others.

안전 경고

  • Open flame — keep flammables away
  • Burning food produces smoke — ventilate
  • The can will get hot — do not touch with bare hands

필수 개인 보호 장비

goggles lab_coat

재료

  • Food samples (10 g each)
    Peanuts, cashews, marshmallows, chips
  • Distilled water (400 mL)
  • Aluminum foil (1 sheet)
    For makeshift shield

장비

Empty aluminum soda can Ring stand and ring Needle or pin (mounted) Lighter Thermometer Analytical balance (0.01 g)

실험 절차

1

Measure 100 mL of water and pour into the soda can. Record the initial temperature.

3 분
2

Set up the can on the ring stand. Position a mounted needle below the can to hold the food sample.

5 분
3

Weigh a food sample (e.g., one peanut) accurately. Impale it on the needle.

2 분
4

Light the food sample with the lighter. Position it under the can to heat the water.

5 분 Open flame — be careful
5

When the food stops burning, immediately stir and record the maximum water temperature.

2 분 Can is hot
6

Calculate energy: q = m(water) × c × ΔT. Convert to kJ/g or Cal/g.

5 분
7

Repeat for different food types. Compare measured values with nutritional labels.

15 분
8

Discuss why measured values are lower than label values (heat lost to surroundings).

5 분

예상 결과

Nuts (high fat) should give the highest energy per gram (~25 kJ/g measured vs ~25 kJ/g label). Marshmallows (sugar) ~15 kJ/g. Measured values will be 30-50% lower than label values due to heat losses.

정리

Allow everything to cool. Dispose of food residue. Rinse the can and clean the work area.

세부 정보

카테고리
Thermochemistry
난이도
Intermediate (High School)
소요 시간
45 분
예상 비용
$10.00
단계
8
재료
3

더 많은 실험

아세트산나트륨의 발열 결정화 30 min 마그네슘의 연소열 50 min 금속의 비열 용량 40 min 커피컵 열량 측정 40 min 헤스의 법칙 검증 60 min 얼음의 융해 엔탈피 25 min 용해는 항상 발열이 아니다 25 min 냉찜질 팩의 화학 원리 20 min 흡열 반응 실험 20 min

Frequently Asked Questions

What is the objective of 폭탄 열량계 시뮬레이션?
다양한 식품을 연소시키고 물로의 열 이동을 측정하여 에너지(칼로리) 함량을 측정한다.
How difficult is 폭탄 열량계 시뮬레이션?
This experiment is rated as Intermediate (High School). It takes approximately 45 minutes to complete.
What safety precautions are needed for 폭탄 열량계 시뮬레이션?
Key safety precautions include: Open flame — keep flammables away; Burning food produces smoke — ventilate; The can will get hot — do not touch with bare hands.
What materials are needed for 폭탄 열량계 시뮬레이션?
The main materials required are: Food samples, Distilled water, Aluminum foil.
What results should I expect from 폭탄 열량계 시뮬레이션?
Nuts (high fat) should give the highest energy per gram (~25 kJ/g measured vs ~25 kJ/g label). Marshmallows (sugar) ~15 kJ/g. Measured values will be 30-50% lower than label values due to heat losses.