Chemistry for Engineers

Question 1

Boyle’s Law is also known as

Answer 1

Mariotte’s Law

Question 2

the pressure that a gas will exert in a container assuming it were alone

Answer 2

Partial pressure

Question 3

What is the empirical formula of the Human DNA?

Answer 3

C39H50O22N15P3

Question 4

denotes the bonds formed between the atoms of a molecule

Answer 4

Empirical Formula

Question 5

denotes the actual number of each atom in a molecule

Answer 5

Molecular Formula

Question 6

“effective” bulletproof vest

Answer 6

Polyethylene Fiber

Question 7

UHMWPE

Answer 7

Ultra-high Molecular Weight Polyethylene

Question 8

bulletproof vest; Kevlar

Answer 8

Polyamide Fiber

Question 9

bulletproof windows

Answer 9

Polycarbonate Fiber

Question 10

flexiglass; Common Material of Construction for Radiation Protection

Answer 10

Polymethcrylate Fiber

Question 11

3 Fundamental Laws of Stoichiometry

Answer 11

1. Law of Conservation of Mass
2. Law of Definite Comparison
3. Law of Multiple Proportions

Question 12

matter can not be created nor destroyed but only change from one form into another

Answer 12

Law of Conservation of Mass

• Antoine Lavoisier

Question 13

regardless of its extensive amount, the % composition of a molecule’s components remains constant

Answer 13

Law of Definite Comparison

• Joseph Louis Proust

Question 14

atoms have the tendency to bond in a appreciable whole number, integers, each being a distinct compound

Answer 14

Law of Multiple Proportions

• John Dalton

Question 15

To which subatomic particle does each statement refer to:
(a.) Has a positive charge
(b.) Cannot be found inside the nucleus
(c.) Has the smallest mass
(d.) Has a neutral charge

Answer 15

Proton, Electron, Electron, Neutron

Question 16

Who discovered electron?

Answer 16

J. J. Thomson (Plum-Pudding Model)

• Cathode Ray Experiment

Question 17

Who coined the term “electron”

Answer 17

George Stoney

Question 18

Who conducted the Oil Drop Experiment?

Answer 18

Robert Millikan

Question 19

Who discovered proton?

Answer 19

Ernest Rutherford (Rutherford Atomic Model)

Question 20

Experiment conducted by Ernest Rutherford

Answer 20

Geiger-Morsden Experiment

Question 21

Who discovered neutron?

Answer 21

James Chadwick

Question 22

Which among the following statements regarding Classical Physics and Quantum Theory is TRUE?

I – Robert Bunsen proposed that Energy, like matter, is discontinuous.
II – Quantum Theory places no limitation on the amount of energy that a system may possess.
III – The energy of a quantum of electromagnetic radiation is proportional to the frequency of the radiation.

Answer 22

III only

Question 23

Who proposed that energy, like matter, is discontinuous?

Answer 23

Max Planck

Question 24

The first spectroscope of energy

Answer 24

Robert Bunsen and Gustav Kirchoff

Question 25

Caesium came from the Latin term

Answer 25

"Caesius" - sky blue

Question 26

Rubidium came form the Latin term

Answer 26

"Rubidius" - deep red

Question 27

Helium came from the Greek term

Answer 27

"Helios" - the sun

Question 28

It places no limitation on the amount of energy that a system may possess

Answer 28

Classical Physics

Question 29

Energy that a system may possess must be finite and discrete

Answer 29

Quantum Theory

Question 30

Who proposed the photoelectric effect?

Answer 30

Heinrich Hertz

Question 31

An energy that binds the electron on the surface of a metal

Answer 31

Work Function

Question 32

It states than light can behave as either a wave or a particle (photon) - Albert Einstein

Answer 32

Wave - Particle Duaity

Question 33

The minimum frequency that a ight must possess in order to initiate the photoelectric effect

Answer 33

Threshold Frequency (f0)

Question 34

The bonds between the atom of a molecule

Answer 34

Intramolecular Forces

Question 35

The bonds between the molecular, identical or not

Answer 35

Intermolecular Forces

Question 36

The weakest IF. Also known as dispersion forces, London forces, or instantaneous dipole - induced dipole forces. Present in every molecule.

Answer 36

Van der Waals Forces

Question 37

The tendency of a molecule to undergo electron redistribution due to the pressure of an external field

Answer 37

Polirazibility

Question 38

Stronger that Van der Waals forces. Can only occur in a polar molecule. The alignment of the partial positive pole of one molecule to the partial negative pole of another molecule.

Answer 38

Dipole - Dipole Forces