ALL MAIN DEFINITIONS Flashcards
reminder to also go through book, test copy (for diagrams, graphs, qna) and lab copy to practise all sums again
1.2 Particle Theory
Melting
The change of state from solid to liquid upon heat energy is melting.
(definition not explanation - see lesson 22 old copy)
Boiling
The change of state from liquid to gas upon heat is called boiling
Solidifícation - the change of liquid to solid when heat is taken away is called solidification
Condensation - The change of state from gas to liquid when heat is taken away is called condensation
Sublimation - The change of state from solid to gas directly is known as sublimation.
1.5 Heat and Matter
Heat
It is a form of energy.
Temperature
It is the degree of hotness or coldness.
Energy
It is the ability to do work
1.3 Melting and Boiling
Melting
It is the change of state from solid to liquid upon heat being taken away.
Boiling
It is the change of state from liquid to gas (vapour) when heat is applied.
Condensation
It is the change of state from gas to liquid when heat is taken away.
Freezing
It is the change of state from liquid to solid when heat is taken away.
Sublimation
It is the change of state from solid to gas or gas to solid (e.g. naphthalene, dry ice, moth balls)
Latent heat
The hidden heat needed to make a solid melt or a liquid boil is called latent heat. Latent means hidden.
3.2 Forces, Work and Power
Power
Power is defined as the rate of work done, or energy converted
(not explanation, see lesson 18 new lab copy)
3.4 Acceleration
Acceleration is defined as the rate of change of speed.
CH. 3.6 Under Pressure
Pressure is caused when objects exert forces on each other. Pressure tells us how concentrated the force is.
Pressure is defined as the force acting per unit area.
Inertia -
The inertia of an object refers to the reluctance of an object to start moving if it is stationary or the reluctance of an object to stop moving if it is already moving.
