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Pressure in Gases

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A series of free Science Lessons for 7th Grade and 8th Grade, KS3 and Checkpoint Science in preparation for GCSE and IGCSE Science.

Exploring Air & Air Pressure



Atmospheric Pressure
Atmospheric pressure plays an essential role in respiration and the function of many devices, including water pumps, syringes and drinking straws. Explanations of pascals and psi and a demonstration revealing the presence of atmospheric pressure.

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.


You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.


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