Quiz 11 Flashcards
(50 cards)
1
Q
- A measure of the gravitational force of attraction exerted on a body is the
density
mass
weight
specific gravity
A
weight
2
Q
- Cathode rays are composed of
positrons
protons
electrons
neutrons
A
electrons
3
Q
- The kind of bond formed between atoms of the same electronegativity will be
covalent
polar covalent
non-polar covalent
ionic
A
non-polar covalent
4
Q
- The formula for aluminum hydroxide is
AlOH
Al(OH)3
Al2(OH)3
Al3OH
A
Al(OH)3
5
Q
- When calcium react with sulfur the compound formed is
Ca2S2
CaS2
CaS
Ca3S2
A
CaS
6
Q
- Which of the element forms an ion with the same charge as the ammonium ion?
chlorine
calcium
oxygen
potassium
A
potassium
7
Q
- The formula of dinitrogen tetroxide is
N2O5
N2O3
N2O
N2O4
A
N2O4
8
Q
- From among the molecular formula given, which molecule has a triple bond?
O2
Cl2
C2H2
CO2
A
C2H2
9
Q
- A substance that is being dissolved in a solution is called the
electrolyte
solvent
solute
colloid
A
solute
10
Q
- Which of the following is not a factor that affect solubility?
properties of solute
temperature
pressure
rate of stirring
A
rate of stirring
11
Q
- Which of the following is a qualitative way of expressing concentration?
molarity
saturated
normality
mole fraction
A
saturated
12
Q
- The process whereby a solvent flows through a semipermeable membrane into a solution.
diffusion
osmosis
effusion
electrolysis
A
osmosis
13
Q
- An electron pair acceptor is
Bronsted-lowry base
Bronsted-lowry acid
Lewis base
Lewis acid
A
Lewis acid
14
Q
- A chemical change in which a substance loses electrons and thus increases in oxidation number.
oxidation
reduction
combination
decomposition
A
oxidation
15
Q
- A reaction in which the products that are formed react to form the original reactants.
reversible
irreversible
redox
chemical
A
reversible
16
Q
- It states that if a stress is applied to a system at equilibrium, the system will shift, if possible, in such a way as to reduce the stress.
Law of mass action
Le Chatelier’s principle
Rate law
Pauli exclusion principle
A
Le Chatelier’s principle
17
Q
- In the reaction Na + Cl2 NaCl, what is the oxidizing agent?
NaCl
Cl
Na
Cl2
A
Cl2
18
Q
- Choose the correct statement about a family of elements in the periodic table.
The atoms of all elements in a family have the same number of shells of electrons.
All elements in a family have the same physical state.
All elements in a family have the same chemical reactivity.
The atoms of all elements in a family have the same number of valence electrons.
A
The atoms of all elements in a family have the same number of valence electrons.
19
Q
- The number that expresses the oxidation state of an atom of an element or groups of atoms is called the
indicator
valence
displacement factor
electrolyte
A
valence
20
Q
- An uneven sharing of electrons between two atoms indicate
bonding
coupling
electronegativity
polarity
A
polarity
21
Q
- The energy required to knock-off electrons from a neutral atom.
activation energy
ionization potential
transition energy
atomic energy
A
ionization potential
22
Q
- The temperature at which a substance starts to burn.
boiling point
kindling temperature
ignition point
combustion temperature
A
kindling temperature
23
Q
- According to Bronsted - Lowry theory, an acid is a substance that can
accept an electron pair
accept a proton
donate an electron pair
donate a proton
A
donate a proton
24
Q
- What law governs the rate of reaction of a substance?
conservation of mass
Arrhenius law
law of mass action
Avogadro’s law
A
law of mass action
25
25. In which colligative property (ies) does the value decrease as more solute is added?
boiling point
freezing point
osmotic pressure
freezing point & vapor pressure
freezing point & vapor pressure
26
26. In condensation polymerization, the most common molecule eliminated is
ammonia
carbon dioxide
methane
water
water
27
27. A superconductor
has zero resistance below some temperature
conducts heat very effectively at room temperature
has high electrical resistance
is unlikely to be a ceramic material
has zero resistance below some temperature
28
28. In which case are adhesive forces involved?
viscosity
surface tension
capillary action
thermal conductivity
capillary action
29
29. Which of the following is the most disordered?
gas near the condensation temperature
solid near the melting point
liquid near the freezing point
solid at very low temperature
gas near the condensation temperature
30
30. Which one of the following is not a characteristic of a liquid?
does not expand to fill the container
flows readily
is almost incompressible
diffusion within it occurs rapidly
diffusion within it occurs rapidly
31
31. Metallic elements are found where in the periodic table?
in the far left-hand and far right-hand groups
in the left-hand and middle groups
in the middle of the table and Group VIII A
only in Groups IA and IIA
in the left-hand and middle groups
32
32. Metals have
both high electrical and high thermal conductivity
low cohesive strength and high luster
high electrical but low thermal conductivity
high luster and low ductility
both high electrical and high thermal conductivity
33
33. Nonmetals are
malleable but not ductile
very reactive with acids
good conductors of electricity
able to form halides, which react with water to form an oxyacid
able to form halides, which react with water to form an oxyacid
34
34. The halogens
will not react with each other
form strong oxyacids of the formula HOX3
are strong electron donors
form strong covalent bonds wit group IA
form strong oxyacids of the formula HOX3
35
35. The rise of liquids up very narrow tubes is called
surface tension
capillarity action
viscosity
buoyant force
capillarity action
36
36. A material which exhibits rubbery or elastic behavior.
Plastic
Elastomer
Thermoplastic
Copolymers
Elastomer
37
37. A polymer additive which reduce the extent of interaction between chains and thus make the polymer more pliable.
flame retardants
plasticizers
fibers
reinforcement
plasticizers
38
38. Natural rubber is formed from liquid resin derived from the inner bark of the Hevea brasiliensis tree, chemically, it is a polymer of _____.
isoprene
neoprene
isooctane
polyethylene
isoprene
39
39. It is a substance that exhibits one or more ordered phases at a temperature above the melting point of the solid.
thermoplastic
plastics
liquid crystal
biomaterials
liquid crystal
40
40. In some cases substances must be moved from an area of low concentration to one of high concentration. This movement is called _____.
osmosis
hemolysis
diffusion
active transport
active transport
41
41. A hydrocarbon derivative in which one or more hydrogen of a parent hydrocarbon have been replaced by a hydroxyl functional group, OH.
carboxylic acid
esters
alcohols
ethers
alcohols
42
42. It is a product of the fermentation of carbohydrates such as sugar and starch.
methanol
ethanol
dimethyl ether
ethanoic acid
ethanol
43
43. Compounds in which two hydrocarbon groups are bonded to one oxygen are called
ethers
esters
phenols
amines
ethers
44
44. Which of the following has no carbonyl group?
aldehydes
ketones
carboxylic acids
ethers
ethers
45
45. The hydrolysis of an ester in the presence of a base is called ____.
esterification
saponification
alkylation
condensation
saponification
46
46. It refers to adherence to a surface.
adsorption
absorption
desorption
osmosis
adsorption
47
47. It is a particle that has the same mass as an electron but an opposite charge.
beta particle
neutrino
positron
nucleon
positron
48
48. Which of the following indicators is yellow in acidic solution and blue in basic solution?
HpH
thymol blue
bromthymol blue
methyl orange
bromthymol blue
49
49. A substance that is capable of acting as either an acid or a base.
buffer
amphoteric
lewis acid
lewis base
amphoteric
50
50. Ionic solutions change the boiling and freezing points ______ nonelectrolytes.
more than
less than
the same as
inversely compared to
more than
