Particles Flashcards
(12 cards)
How do you find the density of a regular object?
Ruler - length / width & height of a cube
Cube on the top pan - measure mass
Calculate volume - l x w x h
What do you use to measure the mass of an object?
Top pan balance
What can you use to measure the volume of any irregular object?
Eureka or displacement can
Method of measuring volume of an irregular object
Measure the mass first ( before putting in water )
Fill displacement can up to the spout
Using string, submerge object and wait for all water to be displaced out into beaker
Pour water into measuring cylinder to measure the volume
To melt / evaporate , energy must be supplied to overcome what?
The (electrostatic) forces of attraction between particles
What is latent heat?
Energy / heat required to change the state of a substance
Internal energy =
Sum of kinetic energy and potential energy of all particles in a substance
When temperature is constant, particles are ?
Gaining potential energy
When temperature is increasing, particles are?
Gaining kinetic energy
Gas pressure is
Particles colliding with the walls of its container, exerting a force outwards
When heating a gas what happens to kinetic energy?
It increases
Increasing kinetic energy leads to
More frequent collisions and with a greater force
Increasing pressure too
