Картезианский водолаз

Демонстрация сжимаемости газа и закона Бойля

Gas Laws Beginner (Middle School) 15 мин ~$3,00

Цель

Собрать картезианского водолаза, чтобы продемонстрировать сжимаемость газа и взаимосвязь между давлением и плавучестью.

Предпосылки

A Cartesian diver is a small inverted container partially filled with air, placed in a sealed bottle of water. When the bottle is squeezed, pressure increases, compressing the air in the diver, which becomes denser and sinks. Releasing the squeeze reduces pressure, the air expands, and the diver rises.

Предупреждения по безопасности

  • No significant hazards

Материалы

  • Plastic bottle (1L) (1)
    With cap, clear
  • Small plastic condiment packet (1)
    Ketchup or soy sauce
  • Water (1 L)

Оборудование

Scissors

Процедура

1

Fill the plastic bottle completely with water, leaving no air space.

2 мин
2

Drop in the condiment packet. It should barely float (adjust by adding/removing water if needed).

3 мин
3

Seal the bottle cap tightly.

1 мин
4

Squeeze the bottle firmly. The diver should sink.

2 мин
5

Release the squeeze. The diver should rise.

2 мин
6

Experiment with different squeeze pressures to control the depth. Explain using Boyle's law and Archimedes' principle.

5 мин

Ожидаемые результаты

When squeezed, the air bubble in the packet compresses, the packet becomes denser than water and sinks. When released, the air expands, the packet becomes less dense and rises. This demonstrates Boyle's law (P↑ → V↓) in a tangible way.

Уборка

Empty the bottle and recycle. The condiment packet can be discarded.

Детали

Категория
Gas Laws
Сложность
Beginner (Middle School)
Продолжительность
15 мин
Прим. стоимость
$3,00
Шаги
6
Материалы
3

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CO₂ и тест с известковой водой 20 min Газовая стехиометрия с магнием 40 min Давление пара и точка кипения 45 min Закон Шарля с воздушным шаром 30 min Молярный объём газа при НУ 35 min Получение водорода 35 min Проверка закона Бойля 40 min Сравнение скоростей диффузии (закон Грэма) 30 min

Frequently Asked Questions

What is the objective of Картезианский водолаз?
Собрать картезианского водолаза, чтобы продемонстрировать сжимаемость газа и взаимосвязь между давлением и плавучестью.
How difficult is Картезианский водолаз?
This experiment is rated as Beginner (Middle School). It takes approximately 15 minutes to complete.
What safety precautions are needed for Картезианский водолаз?
Key safety precautions include: No significant hazards.
What materials are needed for Картезианский водолаз?
The main materials required are: Plastic bottle (1L), Small plastic condiment packet, Water.
What results should I expect from Картезианский водолаз?
When squeezed, the air bubble in the packet compresses, the packet becomes denser than water and sinks. When released, the air expands, the packet becomes less dense and rises. This demonstrates Boyle's law (P↑ → V↓) in a tangible way.