Solids, Liquids and Gases Flashcards
The pressure at start is 3 Pa and the volume is 1.5 Litres. If the pressure afterwards is 6 Pa, what is the volume?
0.75 L
Changing from a solid to a liquid…
Melting
Pressure from a gas or liquid acts in which direction?
Equally in all
If a tank that has a capacity of 10dm cubed is filled with air to 500 KPa, what will be the volume of the air at 702.6 KPa?
7.11dm cubed
No temperature can ever be reached that is lower than
0 Kelvin
What is absolute 0?
-273 degrees centigrade
Pressure from a solid acts?
Downwards
A chocolate bar has a mass of 800g and a volume of 20cm cubed- what is the density?
40 g/cm cubed
Convert 100 C to Kelvin
373 K
K means
Kelvin
Pressure difference in a fluid=
Height m x density kg/m3 x gravity in N/ kg
An ideal gas is sealed in a container at constant volume. If the temperature T is increased to 4T, the pressure will be?
Increased to 4P
An ideal had is contained in a volume V at temp T. If the volume is doubled at constant pressure, the temperature will be
Doubled
Temperature if a gas in Kelvin is proportional to?
The kinetic energy of its molecules
The process of changing from a liquid to a gas is called?
Boiling or evaporating
A temp of 317 Kelvins would have a value of ___ in C?
44C
How do you convert C to K
Add 273
An increase in temperature increases the ____ of gas molecules
Speed, or kinetic energu
What is Brownian motion?
The apparently random motion of particles suspended in a gas or liquid caused by their bombardment by the fast moving liquid or gas particles.
It is hard to begin inflating a balloon. A pressure of 800 KPa is needed to initially inflate the balloon 225 mL. What is the final pressure when the balloon has reached it’s capacity of 1.2L?
150KPa
P1 x V1 =?
P2 x V2
Pressure =
Pressure Pa = Force N / Area m squared
A biscuit is stood on one end. The area is 2cm squared and the force is 0.8N. What is the pressure?
0.4 N/cm squared
Symbol for density
p (rho)
Describe the arrangement and motion of particles in a liquid
Random motion within a close packed irregular structire
If the volume if the lungs is 2.4 L during exhalation and the pressure is 102.7 KPa, what is the volume of the lungs during inhalation?
2.412 L
For a gas in a sealed container, pressure is proportional to
Temperature
The arrangement and motion of particles in a solid?
They vibrate about fixed positions within a close packed regular structure
Density =
Density kg/m cubed = mass kg / volume m cubed
