Kinetic Theory
The increase in size of matter when heated is what?
Thermal Expansion
Which state of matter has a definite shape and definite volume?
Solid
Which phase change occurs when a solid becomes a liquid?
________________ is the attractive force between two objects with mass.
Gravity
The attraction between different substances
Adhesion
The theory that explains the relationship between energy and temperature is called, what?
Kinetic Theory
The three common states of matter are solid, liquid, and ________________.
gas
Which phase change causes a loss of energy?
Melting, Vaporization, Freezing, or Sublimation?
Freezing
The amount of matter in an object is called its ________________.
Volume
What is the formula for calculating density?
Density = mass/volume
As temperature increases, the kinetic energy of particles, does what?
Increases
In which state of matter do particles have the most freedom of movement?
gas
Dry ice (solid carbon dioxide) changing directly to carbon dioxide gas is an example of:
Sublimation
A solid with randomly arranged particles (glass, rubber, wax)
Amorphous
A chemical reaction involving oxygen, such as rusting
Oxidation
Which of the following best describes kinetic theory?
A. All matter is made of moving particles
B. All particles in matter are stationary
C. Only gases have moving particles
D. Temperature does not affect particle motion
All matter is made of moving particles
In a gas, particles are:
Packed tightly w/ low energy
Flowing passed each other
Far apart and moving rapidly in all directions
Far apart and moving rapidly in all directions
During which phase change do particles gain energy and change from liquid to gas?
Vaporization
________________ is the attraction between particles of the same substance.
Cohesion
Which type of solid has particles arranged in a regular, repeating three-dimensional pattern?
Crystalline Solid
When matter is heated and expands, it is undergoing, what?
Thermal Expansion
What is the difference between physical changes and chemical changes?
Physical change: Substance keeps its properties
Chemical change: Substance becomes a completely new substance
When a gas changes directly to a solid without becoming a liquid first, this is called:
Deposition
The ________________ of a liquid describes how thick or thin it is and how easily it flows.
Viscosity
What is the main difference between evaporation and boiling?
A. Evaporation is a chemical change; boiling is physical
B. Evaporation occurs at the surface; boiling occurs throughout the liquid
C. Boiling is slower than evaporation
D. They are exactly the same process
B. Evaporation occurs at the surface; boiling occurs throughout the liquid