Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

CHE > Day 1 PBE concepts (From 2012~) > Flashcards

Day 1 PBE concepts (From 2012~) Flashcards

mixed pbe concepts, di ko na naisama calcs here, saka may separate deck for peeps

1
Q

Distance from earth to most remote known quasar

A

1.4x10^26

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Distance from earth to most remote known normal galaxy

A

9x10^25

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

distance from the Earth to most remote known normal galaxies (M 31, the andromeda galaxy)

A

2x10^22

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Distance from the Sun to nearest star (Proxima Centauri)

A

4x10^16

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

One lightyear

A

9.46x10^15

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Mean orbit radius of the earth about the Sun

A

1.5x10^11

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Mean distance from Earth to the Moon

A

3.84x10^8

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Distance from the equator to the North Pole

A

1.00x10 ^7

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Mean radius of the Earth

A

6.37 x10^6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Typical altitude (above the surface) of the satellite orbiting the Earth

A

2x10^5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Length of a football field

A

9.1x10^1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Length of a housefly

A

5x10^-3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Size of smallest dust particles

A

~10^-4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Size of cells of most living organisms

A

~10^-5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Diameter of a hydrogen atom

A

~10^-10

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Diameter of an atomic nucleus

A

~10^-14

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Diameter of a proton

A

~10^-15

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Breathe problem

A

3.94x10^9

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

from the Latin word Caesius (Sky blue)

A

Caesium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

From the latin word Rubidius (Deep Red)

A

Rubidium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

wasn’t isolated during its discovery; its presence was identified during 1868 Solar Eclipse hence being named after the Greek god of Sun, Helios

A

Helium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

dictates that the amount of energy that a system may possess is limitless

A

Classical Physics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

A method of sequencing amino acids in a peptide.

A

Edman Degradation by Pehr Edman

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Nearest layer of atmosphere from earth’s surface
a) Troposphere
b) Stratosphere
c) Mesosphere
d) Thermosphere

A

a) Troposphere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Pollutant produced from coal and petroleum.

A

Sulfur dioxide is the largest. Followind by NOx and COx (double check sa perrys chap 22, may table doon bandang air pollutant)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What do you call the blanket of pollutants?

A

Smog

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What is the center of an atom

A

Nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Hydrocarbon, also called alkane, any of the saturated hydrocarbons having the general formula C nH 2n+2,

A

paraffins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

It us an organic reaction where the unsaturated bonds of alkenes, alkynes, or azo compounds are cleaved with ozone.

A

Ozonolysis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

How manny Amino acids in human protein?

A

20 amino acids. 9 of them are essential or cannot be made by the body.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Who discovered x-ray?

A

Wilhelm Conrad Roentgen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Number of carbon atoms in olvanil?

A

26 (C26H43NO3)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

What is the chemical formula and molecular weight of 11-tetradecenyl Acetate?

A

C16-H30-O2 (254 g/mol, minsan may typo sa choices, 25.4 nakalagay )

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

What is the product when ethanoyl chloride is reacted with propanol?

A

Propane ethanoate and HCl

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

What is the primary use of ethylene?

A

Ripening of fruits

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

What is the common contaminant in the BTEx process?

A

Benzene, Toluene, Ethylbenzene, Xylene

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

Where does an enzyme capsaicin commonly found?

A

Capsicum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

What is the other name of bulk temperature?

A

Mixing Cup Temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

Choose the common methods in the removal of fine particle in hot airstream common in cement production?

A

ESP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

What is the method that Wohler do to break the vital force theory in nature?

A

Heating of NH4Cl with AgCN to form Urea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

Arrange the following substance in terms of increasing melting point: Palmitic, Palmitic, Stearic; Palmitic, Oleic, Stearic; Oleic, Oleic, Stearic.

A

Oleic, Palmitic, Stearic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

What is the common form of nitro-glycerol?

A

Trinitroglycerin, Nitroglycerin or Nitrate Vasodilator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

Definition of polar covalent

A

a) Unbalance electron with unequal sharing of electrons

b) Bonding of heteronucleus with unequal sharing of electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

What happen to the pH of carbonated drinks if it open in atmospheric condition?

a) Increase
b) Decrease
c) Same
d) Cannot be determined

A

increase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

What is the most polar and least polar of the following functional groups: R-OH, R-NH3, R-COOH, C triple bond C and C-C.

A

Most Polar-C-C

Least Polar- C triple bond C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

The range of melting point of the fatty acids.

A

saturated fatty acid- 100 to 110°C

unsaturated- 70 to 85°C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

What happen to the enthalpy content of the real gases when it is throttled at constant temperature?

A

What happen to the enthalpy content of the real gases when it is throttled at constant temperature?

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

What is the difference between catabolism, anabolism and metabolism?

A

METABOLISM is a set of processes performed by the living beings that allow them to interchange MATTER and ENERGY with their environment.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

What law is the PRC modernization act?

A

RA 8981

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
50
Q

Choose whether the following is/are representation of the nuclear fusion:

A

The big bang theory, the radiant energy of the sun, the formation of deuterium/tritium.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
51
Q

When was nitroglycerine discovered, and what is its form?

A

1847, Ascanio Sobiero, explosive powder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
52
Q

Chemical formula of caffeine.

A

C8H10N4O2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
53
Q

Color expected from octahedral atom due to add complex.

A

pink/red

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
54
Q

Important element for proper function of thyroid gland.

A

Iodine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
55
Q

What is the process of breaking down a large isotope into smaller isotopes?
a. nuclear fission
b. beta particle emission
c. nuclear fusion
d. gamma ray emission

A

nuclear fission

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
56
Q

What is the formula of red lead?

A

check perrys chap 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
57
Q

Can you synthesize Oxygen from Niyrogen?

A

Impossible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
58
Q

Who is the author of octet rule?

A

gilbert lewis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
59
Q

How does alpha, beta and gamma particle affect the mass number of an atom?

60
Q

Given: Dodecane I. Is it soluble in water? II. Is it soluble in hexane? III. Is it combustible? IV. Is it solid, liquid or gas at room temp. & atmospheric conditions?

A

no, yes, yes, liquid, less dense

61
Q

Description of a primary and a secondary cell

A

primary cell- can be recharged
secondary cell cannot be recharged (example, dry cell)

62
Q

Adolf Baeyers contribution in medicine, made by reacting malonic acid and �urea with a catalyst is called

A

barbituric acid

63
Q

Which layer of the atmosphere contains the ozone layer?

A

Stratosphere

recall The Smart Man takes The Elevator
(troposphere, stratosphere, mesosphere, thermosphere, exosphere)

64
Q

Composition of acid in acid rain?

A

sulfuric and nitric

65
Q

How to differentiate alkane alkene and alkyne?

A

Reaction with Br2

66
Q

Polymer used in bullet proof vest

A

linear polyethylene

67
Q

What is the nearest layer of the atmosphere?

A

troposphere

68
Q

Arrange in increasing level of toxicity:
1: heptachlor 2: dieldrum 3: DDT 4: Arsenic 5: Cr

A

dieldrum, heptachlor, arsenic, ddt, cr

69
Q

A tank is half filled with water, if N2 =1.02 moles and H20 =1.02 moles. What happens to the N2 when dissolved in water?

A

remains the same

70
Q

Other term of earth wax

71
Q

Other name of Yamatake system (process automation - DCS)

72
Q

What is used in ultrasonic flow meters

73
Q

Which of the following is not dependent on temperature and wavelength?

a. black body
b. gray body
c. plasma
d. moving body

A

gray body (not sure e2)

74
Q

Electronic noise inside an electric conductor which is independent of applied voltage

a. shot noise
b. Johnson noise
c. white noise

A

Johnson noise

75
Q

Who is the person behind carbon dating method?

A

willard libby

76
Q

Which do float?

balsa wood, ethylene glycol, table salt and ethanol

A

balsa wood

77
Q

Which of the following decrease in entropy

A

melting of ice

78
Q

Fundamental class of reactions in which an electron rich nucleophile selectively bonds with or attacks the positive or partially positive charge of an atom or a group of atoms to replace a leaving group.

A

Nucleophilic substitution

79
Q

What is the solid part of the earth’s crust?

a. hydrosphere
b. lithosphere
c. troposphere
d. atmosphere

A

b.lithosphere

80
Q

One way of obtaining IR spectra of solids is

A

Nojul Mull process

81
Q

What is the sign convention of enthalpy during endothermic reaction?

82
Q

The position and the velocity of an object (particles, atom) cannot both be measured exactly, at the same time, even in theory.

A

Heisenberg Uncertainty Principle

83
Q

Another name of Taurine.

A

Aminoethanesulfonate or

2-aminoethanesulfonic acid

84
Q

Example of pseudo plastic fluid

a. apple sauce
b. rubber latex
c. tap water
d. sewage sludge

A

a. apple sauce

85
Q

Product of distillation of coal tar

86
Q

pH or Normal rain and acid rain

A

Normal rain (5.0-5.5)
Acid rain (4.0)

87
Q

pH of blood

88
Q

Who discovered deuterium?

A

Harold C. Urey

89
Q

If Pb and Al are both dipped in boiling water and are then dipped in water at room temperature, which will have the higher temperature?

A

Pb or Lead because it has the highest temperature increase in the metal with the lowest specific heat capacity.

90
Q

Most abundant metal in human body.

91
Q

Given CO2 + H2O -> C6H12O6 + O2, C6H12O6 + O2 -> H2O + CO2, what are the coefficients? Which is respiration and which is photosynthesis?

A

Photosynthesis–C6H12O6 + 6CO2 -> 6H2O + 6CO2 Respiration–6CO2 +6H2O -> C6H12O6 + 6O2

92
Q

The chemical symbol for Tungsten is derived from the Latin Word?

A

wolfranium

93
Q

What will happen to temperature in a throttling process from high to low pressure?

A

Increase then drop

94
Q

What is the most polar and least polar of the following functional groups: R-OH, R-NH3, R-COOH, C triple bond C and C- C.

A

Most Polar: R-COOH, Least Polar: R-OH

95
Q

simplest type of control; on-off action

96
Q

Elements under Group 1A

A

Has 1 electron on its outer most energy level

97
Q

Produces electricity aside from its main product (power plant
choices: oil refinery, sugar industry, biomass industry

A

oil refinery (?)

98
Q

Non-polar molecules are soluble in _______solvents

A

(non-polar solvents)

99
Q

Ionic compounds are soluble in

A

polar solvents

100
Q

Good connection between solute and solvent

101
Q

Two substances with similar ____ are likely to be soluble with each other

A

intermolecular force

102
Q

Dissolved solute comes out of a solution and forms crystals

A

crystallization

103
Q

Two substances are completely dissolved into each other

104
Q

An ion or molecule is surrounded by solvent molecules

105
Q

A specific case of solvation where solvent molecules are water

106
Q

Factors that changes states?

A

increase temp and increase pressure

107
Q

Measure of liquids resistance to flow?

108
Q

What type of bond has a high viscosity?

A

hydrogen viscosity

109
Q

classification of aspirin

110
Q

Percentage of water in blood

111
Q

Mass ratio of Earth to Moon

112
Q

Percent Argon in Air

113
Q

Chemical basis of Breathalyzer ( used to test if drivers are drunk)

A

Chemical basis is redox reaction. A sample of the driver’s breath is drawn into the breathalyzer, where it is treated with an acidic solution of potassium dichromate. The alcohol in the breath is converted to acetic acid

114
Q

What chemical killed Napoleon?

A

High level of Arsenic

115
Q

Procedure that detects Arsenic

A

Marsh test

116
Q

Second most abundant cation in seawater

A

Magnesium. Sodium is the most abundant

117
Q

Traces of this element gives turquoise its distinctive blue color

118
Q

How many separate patents did Thomas Edison file?

119
Q

Strongest known magnet in the universe

A

neutron star

120
Q

Hottest planet in the solar system

121
Q

How much salt does the average body contain?

122
Q

Hardest substance in the human body

A

Tooth enamel

123
Q

Longest type of cell in the body

A

Nerve cell or neuron

124
Q

Who has more hair follicles? Blondes or brunettes?

125
Q

What crystalline formation are on cave ceilings?

A

stalactites

126
Q

In this model, the atom is made up of negative electrons that float in a sphere of positive charge

A

Thomson’s Plum Pudding Model

127
Q

This model was a result of the well known gold foil experiment

A

Rutherford’s nuclear model

128
Q

Other name for H-2

129
Q

Energy required to separate atom into electrons, neutrons and protons

A

Binding Energy

130
Q

It is the total mads of individual particles minus mass of the atom as a whole

A

mass defect

131
Q

Most abundant elements in the Earth’s core

132
Q

Magic Numbers

A

2,8,20,28,50,82,114,126

133
Q

He generalized Balmer’s work and developed an empirical formula that predicted all of hydrogen’s emission lines incluiding those outside the visible range

134
Q

During a flame test, Lithium produces what color

135
Q

During a flame test, what color do these elements produce?

Litium, strontium, radium, rubidium calcium, sodium, iron, potassium, cesium, selenium

A

A. Lithium - Red
B. Strontium-Red
C.Radium-Red
D.Rubidium-Red
E. Calcium- Brick red
F. Sodium and Iron-Yellow
G. Potassium-Purple
H. Cesium, selenium-Blue

136
Q

Which is larger? Iodine atom or Iodide?

137
Q

Pnictogens have three valence electrons, true or false

138
Q

What is the second most abundant element in the earth’s crust?

139
Q

What is the third most abundant substance in dry air?

140
Q

What is the formal charge of a chloring atom in carbon tetrachloride?

141
Q

A 35% aqueous solution of saltpeter at 30C is _____

a. unsaturated
b. saturated
c. supersaturated
d. cannot be determined

A

Supersaturated

142
Q

Which of the ff. molecular geometry is always polar?

a. trigonal bypiramidal
b. square planar
c. trigonal planar
d. see saw

A

trigonal planer (?)

143
Q

Iodine vapor forms iodine crystals when it touches a cold surface. What is the reverse of the process being described?

A

Sublimation

CHE (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions