Topic 5 SLG Flashcards
What is the relationship between Kelvin and pressure?
p1/T1=p2/T1
What is the result of temperature increases on a gas molecule?
The average speed of the gas molecule also increases
What kind of movement do gas particle have?
They have a random movement
What happens when gas molecules hit walls?
They exert a force
What is the formula to calculate density?
D = m ÷ v
Broken heart
From Kelvins to celsius it is ___?
From Celsius to Kelvins it is ___?
-273
+273
When Force increases pressure _____
Increases
What is the equation for pressure difference?
Pressure Difference = height x density x gravitational field strength
P = h x p x g
Convert 80ºC into Kelvins
Convert 8K into ºC
353
-265
What is the equation to calculate the change in thermal energy?
Change in thermal energy = mass x specific heat capacity x change in temperature
/\ Q = m x c x /\T
Describe the effect of an increase in temperature on the average speed of the air molecules?
It will go faster.
What is specific heat capacity?
It is the energy required to change the temperature of an object by one degree Celcius per kilogram of mass (J/kg °C)
Describe the structure of a solid.
It’s particles are close together and in a fixed, regular arrangement
Describe the structure of a liquid.
It’s particles are close together but can move past each other
Describe the structure of a gas.
It has space in between it’s particles there for they can move freely
What kind of force does a solid have?
It has st
stong forces of attraction
What kind of forces does a liquid have?
It has weaker forces of attraction than a solid
What kind of forces does a gas have?
It has almost no forces in between its particles
Hottest air rises to the top of a balloon. Why is this?
Hot air is less dense
Jose says “The density will be the same whatever the the size of the stone, as long as the type of rock is the same.”
Juan says “Bigger stones will have a higher density because they are heavier.”
Who is correct and Why?
Jose - If the volume increases the mass also increases, so the density stays the same.
