Quiz 1 Flashcards
What is a perfect gas?
It behaves according to PV=nRT and assumes zero IMF
What is a microscopic view of matter?
Based on the concept of atoms and molecules
Quantum Mechanics: bond length, bond angle, molecular geometry, and intermolecular interactions
What is a macroscopic view of matter?
Studies large‐scale properties of matter without explicit use of the atomic or molecular concepts
Thermodynamics and Kinetics: heat capacity, thermal conductivity, phase transition
What is kinetic energy (Ek)?
What is potential energy (V)?
What is an extensive property?
Dependent upon the amount of matter in the substance (e.g. mass, volume)
What is an intensive property?
Independent of the amount of matter in the substance (e.g. pressure, temperature)
How do you turn an intensive property into an extensive property?
How do you turn an extensive property into an extensive property?
What is thermodynamic equilibrium?
A system simultaneously at mechanical, chemical and thermal equilibria
What is a thermoresponsive property?
One that changes with temperature
What is pressure?
Force over area = pressure
extensive over extensive = intensive
What does a barometer measure?
The atmospheric pressure.
What does a manometer do?
Measures the pressure of a system.
What is a bellows gauge?
Operates by a spring/hollow tube that inflates and deflates, moving a gauge
What is a diaphragm gauge?
A diaphragm moves up and down when the pressure increases or decreases, pulling a lever that moves the gauge
Advantages
•Suitable for measuring absolute and differential pressure
•Small in size and Linearity
•Can be used to measure viscous and slurry materials
What is a capsule gauge?
a capsule expands and compresses, moving levers and gear to move a guage
What is an isochore?
The variation of pressure with temperature when the volume is constant.
What is an isotherm?
a process in which a system changes—whether it be the pressure, volume and/or contents—without the temperature changing.
What is an isobar?
looking at the relationship between volume and temperature as pressure is kept constant
