Atom And Particle Model Of Matter Flashcards
Define Mass
The amount of matter in an object
Define the term Melting point
The temperature at which a solid becomes a liquid
Define Freezing point
The temperature at which a liquid becomes a solid.
Define density
The amount of Mass per unit volume
What is the amount of force per unit area
Pressure
What is meant by the term evaporation
The process in which a liquid changes into a gas.
What is the process where a solid becomes a gas without first becoming a liquid.
Sublimation
What is the process where a gas turns into a solid without first becoming a liquid?
Deposition
Define Condensation
The process whereby a gas becomes a liquid.
Define the term boiling point.
The temperature at which a liquid becomes a gas.
Solids that sublime have very weak/strong force of attraction between the particles.
Weak
What will happen to a solid that sublimes when heat is applied?
The forces between the particles break down very rapidly and the liquid phase is missed out completely.
What S.I unit is used to measure pressure?
Pascals(Pa)
There is a box’s that applies 40N on the ground and the area it is placed on is 2m squared. How much pressure is exerted on the ground. (3)
Pressure = Force/ area
=40 / 2
=20Pa
When there is a phase change ther will always be a ___________ and a ____________ change.
Temperature and physical change
