Solids, Liquids And Gases Flashcards
What is pressure?
The amount of force applied per unit area, measured in pascals
What is density?
A measure of the ‘compactness’ of a substance.
Why does pressure in a fluid increase with depth?
This is because the greater a weight is exerted on the same surface area increasing the pressure.
Why does pressure increase as volume decreases?
Due to smaller area there are more frequent successful collisions increasing the pressure as more force is exerted by the particles
What is boyles law?
“For a fixed amount of gas at a constant temperature, pressure is inversely proportional to the volume”
Pressure and temperature are directly proportional. What does this mean?
As temperatures increases, gad pressure increases proportionally.
What is temperature?
The average kinetic energy of a particle in a substance
What is 0K in degrees Celsius?
0K = -273 degrees Celsius
What is 0 Kelvin
Absolute zero. The coldest temperature in the universe
