How can we help?

You can also find more resources in our Help Center.

25 terms

Prentice Hall Science Explorer Chemical Building Blocks Chapter 2

STUDY
PLAY
Solid
has a definite shape and a definite volume
Crystals
particles that form a regular, repeating pattern
Crystalline Solids
solids that are made up of crystals and melt at a specific temperature
Amorphous Solids
particles that are not arranged in a regular pattern and does not melt at a distinct temperature
Liquid
has a definite volume but no shape of its own
Fluid
a substance that flows
Surface Tension
the result of an inward pull among the molecules of a liquid that brings the molecules on the surface closer together
Visocity
a liquid's resistance to flowing
Gas
changes volume very easily
Melting
the change in state from a solid to a liquid
Melting Point
the specific temperature at which melting occurs
Freezing
the change of state from a liquid to a solid
Vaporization
the change from a liquid to a gas
Evaporation
vaporization that takes place only on the surface of a liquid
Boiling
when a liquid changes to a gas below its surface as well as at the surface
Boiling Point
the temperature at which a liquid boils
Condensation
the opposite of vaporization; when particles in a gas lose enough thermal energy to form a liquid
Sublimation
when the surface particles of a solid gain enough energy that they form a gas. They do not pass through the liquid state as they form a gas
Pressure
the force of its outward push divided by the area of the walls of the container.
Boyle's Law
when the pressure of a gas at a constant temperature is increased, the volume of the gas decreases. When the pressure is decreased, the volume increases
Charles's Law
when the temperature of a gas is increased at constant pressure, its volume increases. When the temperature of a gas is descreased at a constant pressure, its volume decreases
Graph
a diagram that tells how two variables, or factors that change, are related.
Origin
the point (0,0)
Direcly Proportional
when a graph of two variables is a straight line passing through the origin
Vary Inversely
when a graph of two variables forms a curve that shows the relationship between pressure and voume known as Boyle's law