A substance that accepts an electron pair is classified as a: w) bronsted-lowry acid x) bronsted-lowry base y) lewis acid z) lewis base

A substance that accepts an electron pair is classified as a: w) bronsted-lowry acid x) bronsted-lowry base y) lewis acid z) lewis base
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ANSWER: Y -- LEWIS ACID
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A compound which is an electron pair donor is generally classified as a: w) Lewis acid x) Bronsted base y) Bronsted acid z) Lewis base

Description : A compound which is an electron pair donor is generally classified as a: w) Lewis acid x) Bronsted base y) Bronsted acid z) Lewis base

Last Answer :  ANSWER: Z -- LEWIS BASE 

Which is defined as a species that accepts a proton? (a) Lewis acid (b) Lewis base (c) Bronsted-Lowry acid (d) Bronsted-Lowry base

Description : Which is defined as a species that accepts a proton? (a) Lewis acid (b) Lewis base (c) Bronsted-Lowry acid (d) Bronsted-Lowry base

Last Answer : Bronsted-Lowry base

Any species that acts as an electron-pair acceptor a: w) Lewis base x) Bronsted base y) Lewis acid z) Bronsted acid

Description : Any species that acts as an electron-pair acceptor a: w) Lewis base x) Bronsted base y) Lewis acid z) Bronsted acid

Last Answer : ANSWER: Y -- LEWIS ACID

A nucleophile acts as a __________ when it reacts with an electrophile. (a) Bronsted-Lowry acid (b) Arrhenius base (c) Lewis acid (d) Lewis base

Description : A nucleophile acts as a __________ when it reacts with an electrophile. (a) Bronsted-Lowry acid (b) Arrhenius base (c) Lewis acid (d) Lewis base

Last Answer : Lewis base

An electrophile acts as a __________ when it reacts with a nucleophile. (a) Bronsted-Lowry base (b) Arrhenius base (c) Lewis acid(d) Lewis base

Description : An electrophile acts as a __________ when it reacts with a nucleophile. (a) Bronsted-Lowry base (b) Arrhenius base (c) Lewis acid (d) Lewis base

Last Answer : Lewis acid

An Arrhenius acid is a substance that: w) donates protons x) accepts protons y) donates hydrogen ions to water z) donates hydroxide ions to water

Description : An Arrhenius acid is a substance that: w) donates protons x) accepts protons y) donates hydrogen ions to water z) donates hydroxide ions to water

Last Answer : ANSWER: Y -- DONATES HYDROGEN IONS TO WATER 

Ammonia can be considered a Lewis base because it can donate: w) electrons x) protons y) hydronium ions z) hydroxide ions

Description : Ammonia can be considered a Lewis base because it can donate: w) electrons x) protons y) hydronium ions z) hydroxide ions

Last Answer : ANSWER: A -- ELECTRONS

An acid is a substance which (1) Donates a proton (2) Accepts an electron (3) Give H+ in water (4) All

Description : An acid is a substance which (1) Donates a proton (2) Accepts an electron (3) Give H+ in water (4) All

Last Answer : (4) All Explanation: An acid is a chemical substance whose aqueous solutions are characterized by a sour taste, the ability to turn blue litmus red and the ability to react with bases and certain metals to form salts.

Identify a species which is not a Bronsted acid but a Lewis acid:

Description : Identify a species which is not a Bronsted acid but a Lewis acid:

Last Answer : Identify a species which is not a Bronsted acid but a Lewis acid: A. HCl B. `NH_(3)` C. `BF_(3)` D. `H_(3)^(+)O`

An electron is classified as a: w) boson x) nucleon y) fermion z) meson

Description : An electron is classified as a: w) boson x) nucleon y) fermion z) meson

Last Answer : ANSWER: Y -- FERMION

When radiation breaks an electron pair bond in a molecule and each fragment of the molecule gets one of the bond electrons, the molecular fragments that are formed are called: w) ions x) free radicals y) stable molecules z) gases

Description : When radiation breaks an electron pair bond in a molecule and each fragment of the molecule gets one of the bond electrons, the molecular fragments that are formed are called: w) ions x) free radicals y) stable molecules z) gases

Last Answer : ANSWER: X -- FREE RADICALS

Assertion :- A reducing agent is a substance which accepts electron. Reason :- A substanc which helps in oxidaton is known as reducing agent.

Description : Assertion :- A reducing agent is a substance which accepts electron. Reason :- A substanc which helps in oxidaton is known as reducing agent.

Last Answer : Assertion :- A reducing agent is a substance which accepts electron. Reason :- A substanc which helps ... . D. If both Assertion & Reason are False.

This black engineer was granted a patent in 1872 for the first automatic oil lubricator. The lubricating cup regulated the flow of oil onto moving parts of machines, revolutionizing the machine industry. Was this well-known inventor: w) Elijah McCoy x) Lewis Latimer y) Leonard McFall z) Branville Woods

Description : This black engineer was granted a patent in 1872 for the first automatic oil lubricator. The lubricating cup regulated the flow of oil onto moving parts of machines, revolutionizing the machine industry. ... well-known inventor: w) Elijah McCoy x) Lewis Latimer y) Leonard McFall z) Branville Woods

Last Answer : ANSWER: W -- ELIJAH McCOY

If a material has the capacity to behave either as an acid or a base it is said to be: w) amorphous x) amphoteric y) anhydrous z) aklaline

Description : If a material has the capacity to behave either as an acid or a base it is said to be: w) amorphous x) amphoteric y) anhydrous z) aklaline

Last Answer : ANSWER: X -- AMPHOTERIC

Buffer solutions show which one of the following traits: w) absorb acid and base with only small changes in pH x) indefinite stability y) high elasticity z) abnormal density

Description : Buffer solutions show which one of the following traits: w) absorb acid and base with only small changes in pH x) indefinite stability y) high elasticity z) abnormal density

Last Answer : ANSWER: W -- ABSORB ACID AND BASE WITH ONLY SMALL CHANGES IN pH

In protolytic reactions in which the reactants are much stronger as an acid and a base than the products, the proton transfer reaction: w) does not occur x) approaches completeness y) produces a much stronger acid and a much weaker base z) produces a much weaker acid and a much stronger base

Description : In protolytic reactions in which the reactants are much stronger as an acid and a base than the products, the proton transfer reaction: w) does not occur x) approaches completeness y) produces a much stronger acid and a much weaker base z) produces a much weaker acid and a much stronger base

Last Answer : ANSWER: X -- APPROACHES COMPLETENESS

Which of the following chemical reactions does not lead to formation of a salt? w) Reaction of salts with acids. x) The reaction of base anhydrides with acid anhydrides. y) Action of water on oxides of nonmetals. z) Reaction of acid with base.

Description : Which of the following chemical reactions does not lead to formation of a salt? w) Reaction of salts with acids. x) The reaction of base anhydrides with acid anhydrides. y) Action of water on oxides of nonmetals. z) Reaction of acid with base.

Last Answer : ANSWER: Y -- ACTION OF WATER ON OXIDES OF NONMETALS. (If water reacts with oxides of nonmetals, an acid is formed.)

Certain substances are classified as water pollutants, others as air pollutants and still others as land pollutants. Which of the following pollutes all three parts of our environment? w) fluorocarbons x) smog y) acid rain z) ozone

Description : Certain substances are classified as water pollutants, others as air pollutants and still others as land pollutants. Which of the following pollutes all three parts of our environment? w) fluorocarbons x) smog y) acid rain z) ozone

Last Answer : ANSWER: Y -- ACID RAIN

Mineral acids are also classified as: w) carboxyl acids x) inorganic acids y) non-electrolytic acids z) oxidation acids

Description : Mineral acids are also classified as: w) carboxyl acids x) inorganic acids y) non-electrolytic acids z) oxidation acids

Last Answer : ANSWER: X -- INORGANIC ACIDS

Which of the following substances is classified as amorphous? w) glass x) Zinc y) diamond z) sodium chloride

Description : Which of the following substances is classified as amorphous? w) glass x) Zinc y) diamond z) sodium chloride

Last Answer : ANSWER: W -- GLASS

Which one of the following is classified as a covalent network solid crystal? w) CaO x) SiO2 y) CO2 z) Pb

Description : Which one of the following is classified as a covalent network solid crystal? w) CaO x) SiO2 y) CO2 z) Pb

Last Answer : ANSWER: B -- SiO2

Gels and Foams are classified as: w) solutions x) emulsions y) colloids z) suspensions

Description : Gels and Foams are classified as: w) solutions x) emulsions y) colloids z) suspensions

Last Answer : ANSWER: C -- COLLOIDS

Sucrose, ordinary table sugar, may be classified as a: w) Monosaccharide x) Disaccharide y) Polysaccharide z) Oligosaccharide

Description : Sucrose, ordinary table sugar, may be classified as a: w) Monosaccharide x) Disaccharide y) Polysaccharide z) Oligosaccharide

Last Answer : ANSWER: X -- DISACCHARIDE 

Which of the following is stronger Bronsted base?

Description : Which of the following is stronger Bronsted base?

Last Answer : Which of the following is stronger Bronsted base? A. B. C. D.

Which of the following is the weakest Bronsted base?

Description : Which of the following is the weakest Bronsted base?

Last Answer : Which of the following is the weakest Bronsted base? A. B. C. D.

Which of the following is the strongest Bronsted base?

Description : Which of the following is the strongest Bronsted base?

Last Answer : Which of the following is the strongest Bronsted base? A. B. C. D.

Is h20 a bronsted base?

Description : Is h20 a bronsted base?

Last Answer : Feel Free to Answer

Which of the following species has the smallest equilibrium separation for its ion-pair? w) KF x) LiF y) BaBr z) NaCl

Description : Which of the following species has the smallest equilibrium separation for its ion-pair? w) KF x) LiF y) BaBr z) NaCl

Last Answer : ANSWER: B -- LiF

What is the purpose of the salt bridge in an electrochemical cell? w) It allows ion migration. x) It allows electron flow. y) It prevents ion migration. z) It prevents electron flow.

Description : What is the purpose of the salt bridge in an electrochemical cell? w) It allows ion migration. x) It allows electron flow. y) It prevents ion migration. z) It prevents electron flow.

Last Answer : ANSWER: W -- IT ALLOWS ION MIGRATION

The orbital angular momemtum quantum number indicates which one of the following? w) the average distance of the electrons from the nucleus x) the direction of spin of the electron y) the shape of the orbital z) the position about the three axes in space of the orbital

Description : The orbital angular momemtum quantum number indicates which one of the following? w) the average distance of the electrons from the nucleus x) the direction of spin of the electron y) the shape of the orbital z) the position about the three axes in space of the orbital 

Last Answer : ANSWER: Y -- THE SHAPE OF THE ORBITAL

Which of the following terms refers to the energy released when an electron is added to a neutral atom? w) electrovalence x) electron affinity y) electroconductance z) none of these

Description : Which of the following terms refers to the energy released when an electron is added to a neutral atom? w) electrovalence x) electron affinity y) electroconductance z) none of these

Last Answer : ANSWER: X -- ELECTRON AFFINITY

Which of the following indicates the shape of the orbital in which the electron moves? w) principal quantum number x) spin quantum number y) angular momentum quantum number z) none of these

Description : Which of the following indicates the shape of the orbital in which the electron moves? w) principal quantum number x) spin quantum number y) angular momentum quantum number z) none of these

Last Answer : ANSWER: Y -- ANGULAR MOMENTUM QUANTUM NUMBER

The elements that have an outer electron configuration ns2 (read: n - s - 2) are called: w) halogens x) transition metals y) alkaline earths z) noble gases

Description : The elements that have an outer electron configuration ns2 (read: n - s - 2) are called: w) halogens x) transition metals y) alkaline earths z) noble gases

Last Answer : ANSWER: Y -- ALKALINE EARTHS

The azimuthal quantum number determines the: w) spin of an electron x) shape of an orbital y) size of an orbital z) energy of an orbital

Description : The azimuthal quantum number determines the: w) spin of an electron x) shape of an orbital y) size of an orbital z) energy of an orbital

Last Answer : ANSWER: X -- SHAPE OF AN ORBITAL 

The 1936 Nobel Prize in chemistry was awarded to Peter J.W. Debye for his studies of: w) kinetic energy of colliding particles x) electron configuration y) dipole moments z) conformations of cyclohexane

Description : The 1936 Nobel Prize in chemistry was awarded to Peter J.W. Debye for his studies of: w) kinetic energy of colliding particles x) electron configuration y) dipole moments z) conformations of cyclohexane

Last Answer : ANSWER: Y -- DIPOLE MOMENTS

In the filling of electron orbitals for the elemen sulfur, which has 16 electrons, the number of electrons in the 3p orbitals is: w) 3 x) 4 y) 6 z) 0

Description : In the filling of electron orbitals for the elemen sulfur, which has 16 electrons, the number of electrons in the 3p orbitals is: w) 3 x) 4 y) 6 z) 0

Last Answer : ANSWER: X -- 4

Alpha rays are different from beta rays in one of the following ways. Are they different since: w) alpha rays are deflected in a magnetic field and beta rays are not x) alpha rays are identical to the electron in mass, and beta rays are not y) alpha rays have a positive charge and beta rays have a negative charge z) alpha rays are produced within the nucleus and beta rays are produced outside the nucleus

Description : Alpha rays are different from beta rays in one of the following ways. Are they different since: w) alpha rays are deflected in a magnetic field and beta rays are not x) alpha rays are ... negative charge z) alpha rays are produced within the nucleus and beta rays are produced outside the nucleus 

Last Answer : ANSWER: Y -- ALPHA RAYS HAVE A POSITIVE CHARGE AND BETA RAYS HAVE A NEGATIVE CHARGE

Acetamide is a much weaker base than ammonia. This is because (a) the electron withdrawing effect of the C=O group makes the lone pair of electrons on nitrogen atom less available for protonation. (b) ) the electron withdrawing effect of the C=O group makes the lone pair of electrons on nitrogen atom more available for protonation. (c) the presence of CH3 group sterically hinders the protonation of the NH2 group. (d) an H atom from the nitrogen is less easily lost from CH3CONH2 than from NH3.

Description : Acetamide is a much weaker base than ammonia. This is because (a) the electron withdrawing effect of the C=O group makes the lone pair of electrons on nitrogen atom less available for protonation. (b) ) ... NH2 group. (d) an H atom from the nitrogen is less easily lost from CH3CONH2 than from NH3.

Last Answer : the electron withdrawing effect of the C=O group makes the lone pair of electrons on nitrogen atom less available for protonation

What purpose does FeCl3 serve in the electrophilic aromatic substitution reaction between chlorine and benzene? (a) It serves as a radical initiator to produce the chlorine radical needed to propagate the chain reaction. (b) It functions by destabilizing the carbocationic intermediate and thereby increases the rate of H+ loss. (c) It serves as a Lewis base catalyst by reacting with Cl2 to generate chloride ions. (d) It serves as a Lewis acid catalyst by reacting with the Cl2 and thereby activates it toward attack by benzene’s π electrons.

Description : What purpose does FeCl3 serve in the electrophilic aromatic substitution reaction between chlorine and benzene? (a) It serves as a radical initiator to produce the chlorine radical needed to propagate the ... by reacting with the Cl2 and thereby activates it toward attack by benzene's π electrons.

Last Answer : It serves as a Lewis acid catalyst by reacting with the Cl2 and thereby activates it toward attack by benzene’s π electrons.

_______ Lewis Acid - Base Complexation Chemistry includes all the common mineral acids. (a) Type – 1 (b) Type – 2 (c) Type – 3 (d) Type – 4

Description : _______ Lewis Acid - Base Complexation Chemistry includes all the common mineral acids. (a) Type – 1 (b) Type – 2 (c) Type – 3 (d) Type – 4

Last Answer : (c) Type – 3

For a substance, density, solubility and melting point are examples of: w) physical properties x) amorphous properties y) chemical properties z) potential properties

Description : For a substance, density, solubility and melting point are examples of: w) physical properties x) amorphous properties y) chemical properties z) potential properties

Last Answer : ANSWER: W -- PHYSICAL PROPERTIES

The critical temperature is the temperature: w) above which a substance cannot be vaporized x) at which the density is a minimum y) at which solid, liquid, and vapor are in equilibrium z) above which the substance cannot be liquified.

Description : The critical temperature is the temperature: w) above which a substance cannot be vaporized x) at which the density is a minimum y) at which solid, liquid, and vapor are in equilibrium z) above which the substance cannot be liquified.

Last Answer : ANSWER: Z -- ABOVE WHICH THE SUBSTANCE CANNOT BE LIQUIFIED. 

Which of the following yields a substance other than glucose on degradation by water? w) Cellulose x) Glycogen y) Sucrose z) Maltose

Description : Which of the following yields a substance other than glucose on degradation by water? w) Cellulose x) Glycogen y) Sucrose z) Maltose

Last Answer : ANSWER: Y -- SUCROSE 

The substance whose chemical formula is CH3OH is known as w) carbonated water x) grain alcohol y) potable alcohol z) methanol

Description : The substance whose chemical formula is CH3OH is known as w) carbonated water x) grain alcohol y) potable alcohol z) methanol

Last Answer : ANSWER: Z -- METHANOL

A crystallized substance containing water of crystallization is most appropriately termed: w) a hydrate x) an oxide y) a hydroxide z) a condensation crystal

Description : A crystallized substance containing water of crystallization is most appropriately termed: w) a hydrate x) an oxide y) a hydroxide z) a condensation crystal

Last Answer : ANSWER: W -- A HYDRATE

A mystical substance supposedly released during combustion was called: w) thermal flax x) ether y) caloric z) phlogiston (pron: flow-gis-ton)

Description : A mystical substance supposedly released during combustion was called: w) thermal flax x) ether y) caloric z) phlogiston (pron: flow-gis-ton)

Last Answer : ANSWER: Z -- PHLOGISTON

This noncombustible liquid in its dry form is noncorrosive to common metals except aluminum. About 90% of all of this material which is manufactured goes into the production of chlorofluorocarbons. Is this substance: w) carbon tetrachloride x) methylene chloride y) hydrogen chloride z) methyl fluoride

Description : This noncombustible liquid in its dry form is noncorrosive to common metals except aluminum. About 90% of all of this material which is manufactured goes into the production of chlorofluorocarbons. ... substance: w) carbon tetrachloride x) methylene chloride y) hydrogen chloride z) methyl fluoride

Last Answer : ANSWER: W -- CARBON TETRACHLORIDE

Among the following, the substance that is considered to be the earliest stage in coal formation is: w) sub-bituminous x) bituminous y) anthracite z) lignite

Description : Among the following, the substance that is considered to be the earliest stage in coal formation is: w) sub-bituminous x) bituminous y) anthracite z) lignite

Last Answer : ANSWER: Z -- LIGNITE

A standardized base solution should be protected from which of the following gases? w) hydrogen x) carbon dioxide y) nitrogen z) argon

Description : A standardized base solution should be protected from which of the following gases? w) hydrogen x) carbon dioxide y) nitrogen z) argon

Last Answer : ANSWER: X -- CARBON DIOXIDE 

Which of the following is NOT a base in DNA? w) uracil x) guanine y) adenine z) cytosine

Description : Which of the following is NOT a base in DNA? w) uracil x) guanine y) adenine z) cytosine

Last Answer : ANSWER: W -- URACIL