Chapter 3 Flashcards
A drop of water when a popsicle is an example of
Good wetting / Low contact angle
The tightening of a guitar string is an example of which of the following stresses
Tension
The modulus of elasticity is an indication of what property of a material
Stiffness
Cool materials will contract, and heated materials will expand. A measurement of this change in volume in relation to change in temperature is called the coefficient of thermal expansion.
Both statements are true
When they stress is induced in a material that is greater than the materials yield strength, the stress is ——————- proportional to the strain, and the material does not return to its original shape
No longer
Which formula Defines the modulus of elasticity
Stress/strain
And example of a physical property is
Density
A twisting force is termed
Torsion
The ability of a material to dissolve in a liquid is termed
Solubility
Elasticity is an example of which of the following properties
Mechanical
The rate of heat flow through a material is referred to as
Thermal conductivity
Jennifer is a practicing hygienist who goes to a nearby restaurant each day for lunch. She often orders a cola with ice and a bowl of homemade soup. As she eats and drinks, her composite restorations and tooth structure are expanding and contracting at different rates. This change in volume are the length of these materials due to the hot food and cold drink is referred to as
Coefficient of thermal expansion
Finger nail polish remover has solvent properties, as it will remove the polish from our fingernails. Another property polish remover has is it’s tendency to evaporate. Finger nail polish remover can be said to have
A high vapor pressure
The force used to condense and amalgam in a preparation
Compression
A hardened cement having low ———— can firmly hold a patient’s gold crown in a place for years in a wet environment.
Solubility
