Particle Flashcards
What is a particle?
Particle is tiny things that materials are made from.
What is a substance?
A substance is made of one type of material only.
What does the particle properties depends on?
Particles properties depends on
-how they are arranged, -how they move,
-how strongly they hold together and
-what the particles are like.
How the particles are in a solid?
In a solid the particles are:
-close together,
-no space between them,
-the particle vibrate (they have the least amount of kinetic energy),
-they have fix shape and volume
How the particles are in a liquid?
In a liquid the particles are:
-close together with small spaces between them,
-slide over each other (liquid particles have more kinetic energy than solid but less than gas),
-the don’t have a fix shape but they have a fix volume.
How the particles are in a gas?
In a gas the particles are:
-far apart,
-alot of space between particles,
-particles collide with each other (they have the most amount of kinetic energy)
they don’t have a fix shape or volume.
definition of melting.
the change of state from a solid to a liquid
what is a melting point?
it’s a point where solid starts becoming liquid
how many melting point a pure substance has?
pure substance have a fixed melting point
how many melting point an impure substance has?
an impure substance or a mixture of different particles have different melting point.
definition of freezing.
the change of state from a liquid to a solid
definition of boiling.
the change of state from liquid to gas that occurs when particle leave throughout the liquid and it happen at boiling point.
what is a boiling point?
it’s a point where liquid starts becoming gas
how boiling can happen?
the boiling can happen if enough energy is transferred to the particles.
definition of evaporation
the change of state from liquid to gas that occurs when particle leave only from the surface of the liquid and it happen at any temperature.
definition of sublimation
the change of state from solid to gas
definition of deposition or de-sublimation
the change of state from gas to solid
Diffusion definition
The movement of liquid or gas particles from a place of high concentration to a place of low concentration
What is rate of diffusion
The speed at which particles move from an area of higher concentration to an area of lower concentration
factors that affect rate of diffusion are?
-Concentration (Higher C the higher rate of diffusion),
-Mass of particles (the heavier the particle the slower it moves or rate of diffusion),
-Temperature (higher T and kinetic energy the higher is the rate of diffusion),
-Properties of solvent (Thickness)
Gas pressure definition
the force exerted by gas particles colliding with the wall of their container
Factor that affect gas pressure are?
-Temperature (gas P increase when T increase and vice-verse),
-Volume (gas P decrease when V increase and vice-verse)
-Concentration of particles (gas P increase when C increase and vice-verse)
