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Chapter 3 Science!

Solids, Liquids, and Gases

has a definite shape and a definite volume solid
has no definite shape but a definite volume liquid
a solid that is made up of crystals in which particles are arranged in a regular, repeating pattern crystaline solid
a solid made up of particles that are not arranged in a regular pattern amorphous solid
a substance that can easily flow fluid
the result of an inward pull among the molecules of a liquid that brings the molecules on the surface closer together surface tension
a liquid's resistance to flowing viscosity
a state of matter with no definite shape or volume gas
the change of state from a solid to a liquid melting
the temperature at which a substance changes from a solid to a liquid melting point
the change of state from a liquid to a solid freezing
the change from a liquid to a gas vaporization
vaporization that only takes place on the surface of a liquid evaporation
vaporization that takes place below its surface as well as its surface boiling
the temperature at which a liquid boils boiling point
the change from a gaseous to a liquid state of matter condensation
the change of state from a solid directly to a gas without passing through the liquid sublimation
the force of the outward push divided by the area of the walls of the container pressure
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. Boyle's law
When the tempeature of a gas is increased at a constant pressure, its volume increases. When the temperature is decreased at a constant pressure, its volume decreases. Charles's law
The four states of matter: solid, liquid, gas, and plasma
Classification of the four types is based upon: particle arrangement, energy of particles, and distance between between particles
Particles of a solid are ___________ __________, vibrating about in a fixed position. tightly packed
Solids have an infinite number of free __________. surfaces
Particles of a liquid are tightly packed, bur are far enough apart to ___________ past each other. slide
Liquids have ___ free surface(s) one
Particles of a gas are very far apart and move __________. freely
Gases have ____ free surfaces no
Why do solids have a definite shape and a definite volume? This fixed, closley packed arrangement of particles causes a solid to have a definite shape and a definite volume.
What are some examples of crystaline solids? salt, sugar, and snow
What are some examples of amorphous solids? plastics, rubber, and glass
If you put a gas in a closed container, what will the gas do? If you put a gas in a closed container, the gas particles will either spread apart or be squeezed together as they fill the container.
When does vaporization take place? Vaporization takes place when the particles in a liquid gain enough energy to form a gas.
Why is the boiling point of water lower in the mountains than it is at sea level? In places close to sea level, the boiling point of water is 100 degrees C. In the mountains, however, air pressure is lower and so is water's boiling point. The lower the pressure,the less energy needed for the particles of a liquid to escape into the air
When condensation occurs, does a gas lose or gain thermal energy? Condensation occurs when particles in a gas lose enough thermal energy to form a liquid.
Give on example of sublimation. One example of sublimation occurs with dry ice. At ordinary atmospheric pressures, carbon dioxide cannot exist as a liquid. So instead of melting, solid carbon dioxide changes directly into a gas.
List the three measurements that are helpful to know when working with a gas. volume, temperature, and pressure
What is the formula to calculate pressure? Pressure = Force / Area
Why does a ball leak air even when it has a tiny hole? The higher pressure inside the ball results in gas particles hitting the inner surface of the ball. Therefore, gas particles reach the hole and escape more often than gas particles outside the ball reach the hole and enter.
What can cause tires to burst on long trips in warm weather? If pressure becomes greater than the tire can hole, the tire will burst.
Created by: lp1213



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