particle model of matter Flashcards
whats 2 renewable energy resources
tidal power and geothermal energy
is this statement there will be a net change to the energy store of a closed system when transfers occur correct or not
incorrect
whats the resolution of the syringe
1cmcubed
a charge of 75c passes through a lamp when a potential difference of 5V is across B how much energy is transferred
75x5 = 375J
use data from the graph to show that the students conclusion was correct
pressure is inversely proportional to volume
PV = C
200x8 = 1600
160x10=1600
when the gas is compressed the volume of the gas in the syringe…
so the number of collisions each second between the gas particles inside the syringe and inside surface of the syringe…
this means the force exerted on the inside surface of the container …
decreases,increases,increases
one kg of a gas has a much larger volume than one kg of a solid use kinetic theory to explain why
This is because there is empty space between the particles in a gas, whereas in a solid, they are tightly packed together
the internal energy of the air increase as the tyrpe is inflated explin why
work is done on the air so the temp of the air increases
explain how the temp increase would affect the pressure exerted by the gas
whenthe temp pf the gas increases, the particles move faster exerting a greater force and increasing the pressure
calculate the volume of the gass when the pressure was 1.8x10to the power of 5
the temp of gas was constant
1.6x10tothepowerof6 x 9.0 = 1.44x10tothepowerof6
(1.6x10topowerof5 x 9.0)/1.8x10to power of 5
= 8.0cmcubed
how can u tell that liquid is evaporating
particles are leaving the container
the temp of the liquid in the container decreases as the liquid evaporates use kinetic theory to explain why
the particles with high kinetic energy evaporate from the liquid first making the average energy and temp of the particles decrease
the specific latent heat of fusion of pure ice is 3.3x10tothepowerof5 j/kg what does this statement mean
it takes 3.3x10tothepowerof5 of energy to change the ice from a solid to a liquid by 1kg
why is it necessary to set up funnel b to obtain an accurate result
as control so u can observe the volume of ice without it being heated after 12 mins
a student wants to calculate the density of the 2 objects a small statue and metal cube describe the methods that the student should use t calculate the densitiies of the 2 objects
first measure the mass using a balance then calculate the density of both using p = m/v
then measure the length of cubes sides using a ruler and calculate volume
for the statue immerse it in water and measure volume of water displaced.
volume of water displaced = volume of small statue
