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45 terms

Science- solids, liquids,gases

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shape or volume
The states of matter are defined by whether or not they hold their __ or __.
solid
A __ has a definite shape and a definite volume.
because the particles are packed tightly and stay in place
Why does a solid have a definite shape and definite volume?
motionless
Particles in a solid are not completely __. Instead, they vibrate.
slightly
Particles in a solid move back and forth __.
crystals
Many solids contain particles that form a regular, repeating pattern which form __.
crystalline solids
Solids that are made up of crystals are called __.
sugar and salt
Two examples crystalline solids are __ and __.
melting point
Crystalline solids melt at a specific temperature called its __.
amorphous
Solids whose particles are not arranged in regular patterns are called __solids.
plastics and rubbers
Two examples of amorphous solids are __ and __
Amorphous
__ solids do not melt when heated, instead they become softer.
They get softer
What happens when amorphous solids are heated?
plastic
The word __ means "able to be molded into many shapes".
liquid
A __ has no definite shape but has a definite volume. It takes the shape of its container.
liquids
Particles in __ are packed closely, but are able to move freely
it means they can flow from place to place.
What does it mean when we say liquids are "fluid"?
viscosity
The resistance of a liquid to flow is called __.
slowly
Liquids with high viscosity flow __.
quickly
Liquids with low viscosity flow __
syrup
An example of a liquid with high viscosity is __
vinegar
An example of a liquid with low viscosity is __
volcanic eruptions
The viscosity of lava helps in classifying ___
gas
A __ takes the shape and volume of its container.
gas
__ particles spread apart and move at high speeds in all directions.
volume
__ is the amount of space matter fills.
the volume of its container
Because gases fill their containers, the volume of a gas is the same as__ .
temperature
__ is a measure of the average energy of motion of the particles of a substance.
The faster the particles are moving, the higher the temperature shown.
Why can it be said that a thermometer can be thought of as a speedometer for molecules?
is the force of its outward push divided by the area of the walls of the container
The pressure of a gas is the __ divided by __.
Force divided by area (f/a)
What is the formula for finding pressure?
firmness
The __ of an object inflated with gas comes from the pressure of the gas
high pressure to an area of low pressure
Gases flow from an area of __ to an area of __
Robert Boyle
__ was an English scientist who did experiments with gases.
decreases
Robert Boyle found that when the pressure of a gas is increased, the volume of the gas __.
increase
Robert Boyle found out that when the pressure is decreased, the volume will __.
Boyle's law
The relationship between the pressure and volume of a gas is called __
pressure
Boyle's law also applies in the opposite way - when the volume of a gas decreases, the __ will increase.
increases
When the temperature of a gas is increases, the pressure of the gas __.
decreases
When the temperature is decreased, the pressure __
If the tires get hot, the pressure in the tire will increase. The tire could pop if pressure isn't released.
Why do truck drivers have to monitor and adjust tire pressure on long trips?
Jacques Charles
A French scientist named __ studied the relationship between the temperature and volume of a gas.
volume
Jacques Charles found that when the temperature of a gas increases, its __ increases.
temperature
Jacques Charles found that when the __ decreases, its volume decreases
Charles' Law
___ states that when the temperature of a gas increases, its volume increases. When the temperature decreases, its volume decreases