Chemic'al Change Flashcards
melting
make or become liquefied by heating
evaporation
Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase after reaching its boiling point.
solid
firm and stable in shape, not liquid or fluid.
gas
A gas is defined as a state of matter consisting of particles that have neither a defined volume nor defined shape
condensation
water which collects as droplets on a cold surface when humid air is in contact with it.
freezing
Freezing is a phase transition in which a liquid turns into a solid when its temperature is lowered below its freezing point.
liquid
a substance that flows freely but is of constant volume, having a consistency like that of water or oil.
deposition
The direct solidification of a vapor by cooling;
sublimation
Sublimation is the transition from the solid phase to the gas phase without passing through an intermediate liquid phase.
solidification
Solidification, also known as freezing, is a phase change of matter that results in the production of a solid.
desublimination
Desublimation or deposition is the phase change from gas directly to solid, with no intermediate liquid phase
reaction rate
: speed at which a reaction takes place
catalyst
: chemical that helps to start or speed up a chemical reaction
rusting
: the corrosion of iron
corrosion
: a chemical reaction that wears away a metal. Air, water or chemicals in air and water, as well as many household substances, can be corrosive. Many acids and other corrosive substances are dangerous.
rust
: a brown substance formed when iron reacts with oxygen and water
surface protection
: coating over a metal surface to prevent corrosion
galvanising
: protecting a metal by covering it with a more reactive metal that will corrode first
