States of Matter
What are the three main states of matter?
solid, liquid, gas
In order to change phases you must add or take away _____________
energy
Which two states of matter are considered fluids?
liquids and gases
As the temperature of a gas increases, the __________ increases.
pressure
Which state of matter has the fastest moving particles?
gas
In order to change from a liquid to a gas you must ________ energy
add
the upward force of a fluid on an object is called
buoyancy
An object that is more _______ than water will sink
dense
Which state of matter has particles that are tightly packed?
solid
Decreasing the temperature of a substance ______ energy
takes away/decreases
______________ states that an object's buoyancy is equal to the weight of the fluid it displaces
Archimedes Principle
Changing from a solid directly to a gas is called:
sublimation
A substance that has definite shape and definite volume
solid
During a phase change, the identity of a substance does not change, but the substance's _________ does
energy
Gases and liquids both have indefinite ___________
shape
the amount of force exerted over an area
pressure