What is the degree or intensity of heat present in a substance or object
100
Thermal energy depends on the ________.
What is the temperature
100
All matter is composed of tiny particles, called...
What is atoms, molecules, and ions.
100
Has a definite shape and volume. Closely packed together, have little kinetic energy.
What is the state of solid?
100
0 degrees C
What is the melting point of ice?
200
Define kinetic energy.
What is: Energy that a body possesses by virtue of being in motion.
200
As an object is warmed and its kinetic energy increases, its _______ energy increases.
What is thermal energy
200
The particles ________ with each other and the walls in which they are held.
What is collide.
200
Less kinetic energy compared to its gas state. Particles can slide past each other. Has a definite volume.
What is liquid state?
300
Define potential energy.
What is the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.
300
Thermal energy is:
The sum of the kinetic and potential energies of particles that make up that object.
300
These particles are in _______, random motion.
What is constant.
300
No definite volume or shape. Particles move quickly
What is gas state?
300
Start to flow during melting phase, do not lose their ordered arrangement completely. Retain geometric order in specific directions.
What are liquid crystals?
400
Define mass.
What is anything with matter.
400
_______ energy is transferred from the air to an object to increase its thermal energy.
What is kinetic energy
400
The amount of energy that these particles lose from these collisions is...
What is negligible/tiny, unimportant.
400
Energy required to change substance from solid to liquid at its melting point.
What is the heat of fusion?
400
Occurs at the surface of a liquid and can happen at nearly any temperature. Particles at liquid's surface have enough KE to escape attractive forces of the liquid.
What is evaporation?
500
What is the difference between heat and thermal energy?
Heat is the flow of thermal energy.
500
The average _______ increases when the temperature of that object increases.
What is kinetic energy.
500
Particles move fastest when they are _____, then _______, then ______.
What is gases, liquids, solids.
500
Have no specific melting point. Soften gradually turn into liquid. Glass is an example.
What are amorphous solids?
500
When frozen, positively and negatively charged ends of the molecules interact creating empty spaces in crystal lattice