Midterm

Question 1

Mass is

Answer 1

the amount of matter in an object

Question 2

Pressure is force/area, to increase pressure you

Answer 2

decrease the area the force is applied
and
Increase the applied force

Question 3

A Bourdon Gauge utilizes a coiled tube to measure

Answer 3

The pressure difference between the pressure exerted by the a gas in a cylinder and atmospheric pressure

Question 4

Kinetic energy is

Answer 4

the energy of motion

Question 5

The second law of thermodynamics states

Answer 5

thermal contact between two bodies transfers heat from hot to cold

Question 6

Pascals principle states that

Answer 6

a change is pressure on an enclosed, incompressible fluid is transferred equally throughout the body of the fluid

Question 7

As the speed of a fluid increases, the pressure exerted by the fluid

Answer 7

decreases according to Bernoulli

Question 8

Viscosity is the property which determines

Answer 8

laminar flow

Question 9

Calculate the total pressure (PTotal) if the gauge pressure (PGauge) on an o2 cyclinder reads 10psi and atmospheric pressure is (Patmosphere) is 14.7

Answer 9

24.7 psi

Question 10

A change in internal energy can be calculated from the

Answer 10

heat and work process

Question 11

Potential energy is

Answer 11

stored energy

Question 12

Density is the ratio of

Answer 12

mass to volume

Question 13

Atomic Number Z =

Answer 13

the number of protons

Question 14

T/F a substance can be both a molecule and an element

Answer 14

True

Question 15

The volume of a substance can be described as

Answer 15

Extensive physical property

Question 16

What elements are important for muscle contraction?

Answer 16

K, Ca, Mg

Question 17

Which element is important for CNS stability?

Answer 17

Na

Question 18

Name this molecular compound: CCl4

Answer 18

Carbon Tetrachloride

Question 19

Removing the water from a hydrate forms

Answer 19

anhydrous salt

Question 20

The most common element in the universe is

Answer 20

Hydrogen

Question 21

T/F Accuracy is the agreement between replicate measurements

Answer 21

False

Question 22

________ is the agreement between experimental data and the “true” value

Answer 22

Accuracy

Question 23

_______ is the agreement between replicate measurements

Answer 23

Precision

Question 24

A ___________ can be observed or measured without changing the chemical makeup of the substance

Answer 24

physical property

Question 25

A ______ change occurs without producing a new chemical substance

Answer 25

physical

Question 26

________ properties do not depend on the quantity of material

Answer 26

Intensive

Question 27

________ properties depend on the amount of material

Answer 27

Extensive

Question 28

Density=

Answer 28

mass/volume