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Chem 110 > Quiz 11- All Quizzes > Flashcards

Quiz 11- All Quizzes Flashcards

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1
Q

The formation of ions typically occurs when
A) nonmetal atoms lose electrons and metals gain them
B) metal and nonmetal atoms are close together in the number of valence electrons
C) metal and nonmetal atoms have the same number of electrons
D) nonmetal atoms gain electrons and metal atoms lose them.

A

Answer: D

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2
Q

Generally, the octet rule works fairly well for predicting the behavior of atoms. However, there is an exception:
A) The halogens do not form ions on the bases of the octet rule.
B) The alkali metals only conform to the octet rule when producing neutral atoms.
C) The transition metals do not necessarily conform to the octet rule.
D) The nonmetals do not conform to the octet rule.

A

Answer: C

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3
Q

A compound is:
A) Two or more elements well mixed
B) Two or more elements combined chemically
C) Two or more elements carrying a positive charge
D) a physical blend of two or more elements

A

Answer: B

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4
Q

The difference between an ionic bond and s covalent bond is that
A) Ionic bonds commonly occur between two metals and covalent bonds occur between metals and nonmetals
B) ionic bonds are between atoms that can share electrons; covalent bonds are between atoms that will donate/accept electrons
C) covalent bonds come about because of sharing electrons;ionic bonds do not
D) ionic bonds are between smaller atoms; covalent bonds are between large atoms.

A

Answer:C

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5
Q

When considering the octet rule, the explanation of the O^2- ion is
A) a loss of two electrons to get closer to 8 in the energy level.
B) when an oxygen atom gains two electrons, it has the same electron arrangement as neon, an inert gas.
C) Oxygen’s nuclear charge of 8 can only hold 8 electrons in the outer shell.
D)Oxygen is an exception to the octet rule.

A

Answer:B

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6
Q 
How many electrons are contained in sulfide ion?
A) 18
B) 14
C)30
D)16
A

Answer:A

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7
Q 
What is the correct name of the compound Cl2O3?
A) dichlorine trioxide
B) Chlorine oxide
C) Chlorine trioxide
D) Chloride Oxide
A

Answer:A

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8
Q 
The name of the compound Na2CO3 is 
A) sodium carbonate 
B) disodium carbonate
C) sodium bicarbonate 
D) disodium bicarbonate
A

Answer:A

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9
Q 
Which of the following is an ionic compound?
A) CS2
B) CO2
C) Mg(OH)2
D) CH4
A

Answer: C

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10
Q 
Choose the formula of cobalt (II) nitrate. 
A) CoN
B) Co2 NO3
C) Co(NO3)2
D)Co(II)(NO3)2
A

Answer:D

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11
Q 
What is the molar mass of magnesium chloride?
A) 59.80 g/mol
B) 90.40 g/mol
C) 95.30 g/mol
D) 125.90 g/mol
A

Answer:C

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12
Q 
Calculate the mass of 10.00 moles of Nickel (II) cyanide, NI(CN)2.
A)847.0 grams
B) 987.0 grams
C) 1107 grams
D)2694 grams
A

Answer:C

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13
Q 
The conversion of a solid directly into a gas is called
A) vaporization
B) deposition
C) sublimation 
D) melting
A

Answer:C

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14
Q 
Liquids have_ shape and_ Volume
A) fixed/variable
B) fixed/fixed
C) variable/fixed
D) variable/Variable
A

Answer:C

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15
Q 
Which of the following is a chemical change?
A) evaporation of water 
B) melting of copper
C) tearing paper
D) frying an egg
A

Answer:D

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16
Q 
The number 390000, expressed correctly in scientific notation, is_
A) 3.9 x 10^-6
B)3.9 x 10^5
C) 3.9
D) 3.9 x 10^-5
A

Answer: B

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17
Q 
2.32 g is the same as
A) 232 kg
B) 23.2 cg 
C) 2320 mg
D) 0.0232 dg
A

Answer: C

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18
Q

Mg has how many protons, neutrons, and electrons?
A) 12 protons, 23 neutrons, and 23 electrons
B) 12 protons, 11 neutrons, And 11 electrons
C) 23 protons, 11 neutrons, and 23 electrons
D) 12 protons, 11 neutrons, and 12 electrons

A

Answer:D

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19
Q

Which of the following is the correct order of elements in increasing atomic radius: K,Mg,B?
A) K< Mg<b></b>

A

Answer:B

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20
Q

Radioisotopes with short half- lives are used in diagnostic tests because
A) They have high energy
B) they are inexpensive
C) they do not pose health risks by being present long after use.
D) they have less penetration ability

A

Answer:C

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21
Q

Most elements have radioisotopes. What is a radioisotope?
A) An isotope That has a different atomic number
B) An isotope That releases nuclear radiation
C)An isotope That releases electrical radiation
D) Any isotope That can absorb nuclear particles.

A

Answer:B

22
Q

What is the minimum protection against exposure to beta particles?
A) None, bets particles are of low energy and cannot penetrate skin
B) gloves, a lab coat, or over a meters distance from the source.
C) A thin sheet of plastic or metal
D) A sheet of metal

A

Answer:C

23
Q

Gamma rays require a thick slab of concrete or lead to block them because they.
A) have the lowest energy
B) are so energetic that they have a very high penetrating power.
C) are large in size
D) are small in size

A

Answer:B

24
Q 
How many valence electrons must S atom gain to reach an octet?
A)1
B)2
C)3
D)0
A

Answer:B

25
Q 
What is the molar mass of isoprntyl acetate, C7H14O2, a compound responsible for the odor of bananas?
A) 130.19 g/mole
B) 98.32 g/mole
C) 129.35 g/mole
D) 146.58 g/mole
E) 13.19 g/mole
A

Answer: A

26
Q 
The number of covalent bonds that a nitrogen atom is expected to form is\_\_\_\_\_.
A) 1
B)3
C)2
D)4
A

Answer:B

27
Q

Which of the following statements is true about hydrogen bonding interaction?
A) it occurs only in molecules that contain H bonded to a highly electronegative atom, such as N,O, or F.
B) it’s a special type of dipole-dipole interaction.
C) It is present in H2O
D) All Of The above

A

Answer:D

28
Q 
The ability of an atom in a molecule to attract bonding electrons to itself is \_\_\_\_.
A) polarity
B) electronegativity
C) ionic nature
D) bonding character
A

Answer:B

29
Q 
Which of the following contains a non polar covalent bond?
A)LiBr
B) CaCl2
C)H2O
D)O2
A

Answer:B

30
Q 
The molecule CH4 has a tetrahedral shape. The angle between the bonds in CH4 is approximately\_\_\_.
A) 104.5
B)109.5
C)90
D)120
A

Answer:B

31
Q 
Organic compound must contain which of the following atoms?
A)O
B) H
C) S
D)C
A

Answer:D

32
Q

Oxygen is more electronegative than carbon, so when an oxygen atom pulls the shared pair of bonding electrons toward itself to form a covalent bond, the oxygen carries.
A) a partial negative charge
B) no charge
C) a partial negative charge
D) both a partial positive charge and a negative charge.

A

Answer:C

33
Q 
A chemical reaction in which there is a transfer of electrons from on reactant to another reactant can be classified as
A)decomposition 
B) combustion reaction
C) oxidation-reduction reaction
D) double replacement reaction
A

Answer:C

34
Q

The function of an enzyme in a reaction is to
A) cause a reaction to be reversible at the same reaction rate.
B) increase the AG to increase the rate of the reaction.
C)increase the rate of the reaction by reducing the activation energy
D) inhibit the reaction

A

Answer:C

35
Q

Benzoyl peroxide can be used as a treatment for acne. Benzoyl peroxide
A) has s reduction action that tends to neutralize the effects of the acne bacteria
B) is injected so that it will have s general immune action against bacteria causing acne.
C) Is an oxidizing agent used on the skin to kill the bacteria causing acne.
D) is not used for acne; it is an antiseptic used to sterilize a surgeons hands.

A

Answer:C

36
Q 
The device used to determine a patients blood pressure is the 
A) manometer
B) barometer
C) sphygmomanometer 
D) hyperbarometer
A

Answer:C

37
Q

The cause of chronic hypertension is
A) high blood pressure
B) blood moving too fast through the arteries that are dilated.
C)constricted movement of blood through blood vessels.
D) the inability of the body to respond to a change in posture.

A

Answer:C

38
Q 
Which of the following mixtures is heterogeneous 
A) sea water
B) carbonated water
C) Koop aid solution 
D) concrete
A

Answer:D

39
Q 
The solute Of a solution is the component
A) That is dissolved in the solvent
B) in the greatest supply
C) that must be ionic
D) that must be  solid
A

Answer:A

40
Q 
Which of the following ionic substances is insoluble in water?
A) KNO3
B) BaSO4
C) NA3PO4
D) NH4Br
A

Answer:B

41
Q

A prodrug is
A) used because it is less expensive than the regular medication
B) a more professional type of medication than is normally used.
C) the metabolic result of normal bodily processes on commonly available materials.
D) a precursor of a drug that is converted by metabolic processes to that drug

A

Answer:D

42
Q 
The conjugate acid of water is\_\_\_
A)HNO2
B) H2O
C) H3O+
D)NO2-
A

Answer:C

43
Q

When a reaction is at equilibrium
A) it has no products
B)the rate of the forward reaction is equal to the rate of its reverse.
C) It occurs very quickly using up all of the reactants
D) it produces the same amount of product as reactant

A

Answer:B

44
Q

Which will not increase the amount of ammonia at equilibrium?
A) increasing the concentration of N2
B) increasing the concentration of H2
C) increasing the concentration of N2 and H2
D) addition of a catalyst

A

Answer:D

45
Q

What is mutarotation?
A) The conversion of a D-monosaccharide into an L monosaccharide
B) The conversion of a D galaxies into B-D galacose
C) The conversion of a pyramids into a furanose
D) The conversion of an Aldiss into a ketose

A

Answer:B

46
Q 
Stereoisomers that are not mirror images of one another are called
A) enantiomers
B) anomers 
C) diastereomers
D) Fischer projections
A

Answer:C

47
Q

An Aldiss is a carbohydrate that contains
A) hydroxyl groups on the terminal carbons
B) water molecules on the alpha carbon
C) an Aldehyde group
D) monosaccharides

A

Answer:C

48
Q

Which of the following properties of an enantiomer does not influence the amount of its rotation if plane polarized light?
A) temperature
B) wavelength of light
C) number of molecules that the light passes through
D) it’s chemical property

A

Answer:D

49
Q

What is the difference between accuracy and precision?

A

Accuracy is how accurate it is and precision is how close the answer is but not actually the answer

50
Q

Differentiate between ionic and covalent compounds.

A

Ionic compounds are compounds that are metal and nonmetal. Covalent compounds are non metal and nonmetal

51
Q

Describe a balance chemical equation.

A

A balance chemical equation is what balances it and sets them equal to each other

52
Q

What is the difference between a solution, a colloid and a suspension

A

A solution is a solution sovalent . A colloid is a small particle that doesn’t settle. A suspension is a large settle out of a phase

Chem 110 (7 decks)

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