quiz 19 Flashcards
Which part of internal energy relates to changes of state?
Potential energy
What symbol is used instead of writing the word changed?
triangle(the Greek letter delta)
How do you convert from g into kg?
divided 1000
Latent heat of fusion relates to which state change?
Solid to liquid or melting
When the pressure inside a closed container is much bigger than the pressure outside the container,what can happen?
Explosion
Describe the arrangement of particles in a liquid
closely packed, not regular arrangement
Define the specific heat capacity of a substance
Amount of energy needed to increase the temperature of 1 kg of a substance by 1 degrees Celsius
Why are changes of state physical changes?
They are reversible and no new substance is made
Why can liquids and gases flow?
The forces between particles are weak enough for the particles to move around
State the relationship between temperature and pressure(when volume is kept constant).
Directly proportional
State the unit of volume
m cubed
Why do liquids and gases take the shape of their container
The particles can move around
Why cant solids flow?
The forces between particles are too strong so the particles cant move around
At what temperature do melting and freezing take place?
The melting point
What symbol is used instead of writing words specific heat capacity
c
