Solids, Liquids and Gases Flashcards
What is the formula for density?
Mass/ volume
What is the formula for pressure?
Force/ area
How does pressure at a point in a gas or liquid work?
Equally in all directions
What is the formula for pressure difference?
Height * density * gravitational field strength
What is the kinetic theory of a solid?
1) Strong forces of attraction
2) Fixed regular arrangement
3) Little energy and only vibrate
What is the kinetic theory of a liquid?
1) Weak forces of attraction
2) Close together but can move around
3) More energy than a solid and move randomly
What is the kinetic theory of a gas?
1) Almost no forces of attraction
2) Far apart
3) Lots of energy and move in random directions quickly
What is specific heat capacity?
Energy required to change the temperature of an object by one degree Celsius per kilogram of mass
What is the formula for thermal energy change?
Mass * specific heat capacity * change in temperature
What is absolute zero?
-273 degrees Celsius
How do you convert from Celsius to degrees?
Add 273
What happens when you heat a molecule?
Average speed of the molecule increases as their is more energy
