This introduction covers The Invisible Bombardment within Gas Pressure & Temperature for GCSE Physics. Revise Gas Pressure & Temperature in Particle Model for GCSE Physics with 19 exam-style questions and 30 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 1 of 12 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.
📖 The Invisible Bombardment
Right now, trillions of air particles are smashing into your skin at around 500 m/s. You don't feel individual impacts because they're tiny, but together they create atmospheric pressure — about 100,000 Newtons pressing on every square metre of your body! Heat a gas and particles move faster, hitting container walls harder and more often. In a sealed container, pressure SKYROCKETS. That's why aerosol cans warn "Do not expose to heat" — they can literally explode!
Pressure Equation
p = F / A
Pressure (Pa) = Force (N) ÷ Area (m²)
Practice questions for Gas Pressure & Temperature
A sealed gas container is heated. What happens to the pressure of the gas inside?
A sealed gas cylinder is heated. Explain, using particle theory, why the pressure of the gas increases when the temperature increases.
Quick recall flashcards
Pressure equation
p = F/A
What is pressure?
Force per unit area (force divided by area)