Particle model of matter YEAR 10 Flashcards
1
Q
Practical
Measure density of an irregular shaped object
A
Tie the object to string
Fill a EUREKA CUP with water up to the hole
Place a measuring cylinder by the hole so it takes in the water from the eureka cup
Lower the object into eureka cup
The volume of water in cylinder is vol of object
Density = mass/volume
2
Q
Define latent heat
A
Energy needed for a substance to change state
3
Q
Which state change is
Latent heat of fusion
A
Solid to liquid
4
Q
What state change is represented by
Latent heat of vaporisation
A
Liquid to gas
5
Q
why does a higher temperature result in higher gas pressure
A
More kinetic energy
Particles move faster
Collide more often w walls of container
Collide with more force (pressure = f/a)
6
Q
Kelvin 0 degrees is
A
-273 degrees celsius
