The States of Matter
This state of matter has definite shape and definite volume.
Solid
A type of energy change in which energy is added.
Endothermic
The process of changing from a solid to a liquid.
Melting
A measure of how fast the particles in an object are moving.
Temperature
Two things that can happen to a substance when it gains or loses energy (name both)
Temperature changes and Change of state
This state of matter has indefinite shape and definite volume
Liquid
A type of energy change in which energy is removed.
Exothermic
The process of changing from a liquid to a solid.
Freezing
Energy associated with moving objects.
Kinetic energy
This law says that heat flows naturally from an object at a higher temperature to an object at a lower temperature.
The Second Law of Thermodynamics
This state of matter has indefinite shape and indefinite volume.
Gas
Melting, evaporation, and sublimation are ______________ changes.
Endothermic
You spilled your stanley on your desk. Instead of being responsible and cleaning it up with paper towels you leave the liquid on the desk. Eventually the liquid goes away.
Evaporation
A form of kinetic energy associated with molecules in motion; also known as "heat."
Thermal energy
Motion of the particles
True or False: Water takes up more space as a liquid than it does as a solid.
False - Water takes up more space as a solid.
Freezing and condensation are _________________ changes.
Exothermic
The temperature at which a gas turns into a liquid.
Condensation Point
The temperature at which a liquid turns into a gas.
Boiling point
The process by which a substance changes directly from a Solid to a gas, skipping the liquid phase.
Sublimation
The particles of a solid make small movements called...
Vibrations
Thermal energy can be ________________ from one object to another.
Transferred
True or False: A change of state is a chemical change.
False
The change of matter from one state to another, such as a solid, liquid, or gas.
Phase change or Change of state
True or False: Particles of a substance begin to move slower at higher temperatures
False: Particles begin to move faster at higher temperatures.