Particle Theory of Heat and Matter
The first statement of particle theory is _____
all matter (everything) is made up of particles
All matter is made of ...
Particles
These are small portions of matter that make up everything we see, and even the things we cannot see.
Particles
A liquid changing to a solid.
freezing
The particles are arranged in regular rows with the particles are touching each other
solid
All particles in one substance are __________
Identical (same)
Particles of this state are extremely close together, have extremely strong attraction between them, and hold a definite shape.
Solid
A solid changing to a liquid.
melting
True or false. The attractive forces in a gas are weak
True
All particles are in constant ___________.
Motion.
Particles of this state are close together, have a weak attraction between them, flow past each other, and take the shape of their container.
Liquid
A liquid changing to a gas.
evaporation
When food colouring is dropped into a HOT liquid it spreads out ______
quickly
___________ affects the speed at which particles move.
Temperature.
Particles of this state are widely separated, move at great speed, and take the shape of an enclosed container.
Gas
A gas changing to a liquid.
condensation
When a substance is dropped into COLD water it spreads out _____
slowly
Particles have forces of ____________ between them.
Attraction.
This has no fixed shape, tends to flow, takes the form of its container, and gives away easily to external pressure.
Liquid
A solid changing to a gas.
Sublimation