Solids, Liquids and Gases Flashcards
(24 cards)
What does density mean?
The amount of molecules/atoms per cube unit
How do you find the density of an object?
Mass / Volume = Density
M / V = Density
What units of measurement are used for measuring density?
g/cm³
kg/m³
How is the volume of irregular shapes found?
Using the ‘Eureka!’ method, which is done using a eureka can. The amount of water displaced is equivalent to the volume.
How can you tell if an object will float?
If it is denser than the liquid, it will sink. Otherwise it will float.
What is the conversion rate between cm³ and m³?
cm³ —–> m³
x100³
What is the conversion rate between °C and Kelvin?
°C —–> K
+273
What is room temperature?
25°C
298 K
What is pressure?
The force applied onto a certain area or space.
In what way is force measured?
Newtons (N)
In what direction does the pressure act in solids?
In the direction of the force.
If the pressure is high for a solid there is likely to be a…
High force
Low surface area
If the pressure is low for a solid there is likely to be a…
Low force
High surface area
What is the equation for pressure for solids?
Pressure = Force / Surface Area (in contact)
P = F / A
How do you increase the amount of pressure in a liquid?
Increase the depth
What is the equation for pressure in liquids?
Pressure = Gravity Force x Height x Density
P = G x H x P
In what direction does the pressure acts in liquids?
In all directions
Solid to liquid
Melting
Liquid to gas
Evaporating
Gas to liquid
Condensing
Liquid to solid
Freezing
What is sublimation?
Solid to gas
What is deposition?
Gas to solid
What is one Pascal equivalent to?
1 N/m²
