Midterm Flashcards
Mass is
the amount of matter in an object
Pressure is force/area, to increase pressure you
decrease the area the force is applied
and
Increase the applied force
A Bourdon Gauge utilizes a coiled tube to measure
The pressure difference between the pressure exerted by the a gas in a cylinder and atmospheric pressure
Kinetic energy is
the energy of motion
The second law of thermodynamics states
thermal contact between two bodies transfers heat from hot to cold
Pascals principle states that
a change is pressure on an enclosed, incompressible fluid is transferred equally throughout the body of the fluid
As the speed of a fluid increases, the pressure exerted by the fluid
decreases according to Bernoulli
Viscosity is the property which determines
laminar flow
Calculate the total pressure (PTotal) if the gauge pressure (PGauge) on an o2 cyclinder reads 10psi and atmospheric pressure is (Patmosphere) is 14.7
24.7 psi
A change in internal energy can be calculated from the
heat and work process
Potential energy is
stored energy
Density is the ratio of
mass to volume
Atomic Number Z =
the number of protons
T/F a substance can be both a molecule and an element
True
The volume of a substance can be described as
Extensive physical property
What elements are important for muscle contraction?
K, Ca, Mg
Which element is important for CNS stability?
Na
Name this molecular compound: CCl4
Carbon Tetrachloride
Removing the water from a hydrate forms
anhydrous salt
The most common element in the universe is
Hydrogen
T/F Accuracy is the agreement between replicate measurements
False
________ is the agreement between experimental data and the “true” value
Accuracy
_______ is the agreement between replicate measurements
Precision
A ___________ can be observed or measured without changing the chemical makeup of the substance
physical property
A ______ change occurs without producing a new chemical substance
physical
________ properties do not depend on the quantity of material
Intensive
________ properties depend on the amount of material
Extensive
Density=
mass/volume
