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WAZZAP > Quiz 8 > Flashcards

Quiz 8 Flashcards

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1
Q
  1. Which of the following is the strongest type of bond?

hydrogen bond

ionic bond

covalent bond

metallic bond

A

ionic bond

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2
Q
  1. The type of bonding in hydrogen chloride is

Ionic

polar covalent

Non-polar covalent

Co-ordinate covalent

A

polar covalent

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3
Q
  1. Elements present in group I are called

alkali metals

reactive non metals

amphoteric

alkaline earth metals

A

alkali metals

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4
Q
  1. _____ is the Greek word for “ salt-forming”.

actinides

halogen

lanthanide

transition

A

halogen

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5
Q
  1. What happens to the metallic property of elements as you move from left to right in a periodic table of elements?

decreases

increases

remains the same

varies

A

decreases

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5
Q
  1. The atomic number of an element is based on the

atomic weight

number of neutrons

number of protons

density of vapor

A

number of protons

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6
Q
  1. Which of the following has no definite structure?

crystalline

amphoteric

amorphous

allotropic

A

amorphous

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7
Q
  1. A substance that contains hydrogen and yields hydrogen ions in aqueous solution.

Acid

base

neutral

buffer

A

Acid

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8
Q
  1. A solution of a weak acid and its salt which resist appreciable changes in pH value is called

normal solution

colloidal dispersion

neutral solution

buffer solution

A

buffer solution

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9
Q
  1. Oxidation involves

loss of protons

gain of electrons

increase in valency

decrease in valency

A

increase in valency

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10
Q
  1. These are very large molecules formed by linking together many smaller molecules.

monomers

oligomers

polymers

isomers

A

polymers

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11
Q
  1. A substance that increases the rate of reaction but not being consumed in the reaction.

base

acid

catalyst

substrate

A

catalyst

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12
Q
  1. Aspirin is

salicylic acid

acetylsalicylic acid

methyl salicylate

phenyl salicylate

A

acetylsalicylic acid

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13
Q
  1. Lanolin is

a hydrocarbon oil

a hydrocarbon wax

a plant wax

fat from sheep’s wool

A

fat from sheep’s wool

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14
Q
  1. Hair is

protein

carbohydrate

fat

cellulose

A

protein

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15
Q
  1. Most conditioners of hair are

detergents

resins

proteins

herbal essences

A

proteins

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15
Q
  1. In acidic solutions, soap are converted into

bases

phenols

esters

carboxylic acids

A

carboxylic acids

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16
Q
  1. The salts of long-chain carboxylic acids are called

soaps

synthetic detergents

fabric softeners

bleaches

A

soaps

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17
Q
  1. Most bleaches contain the element

phosphorus

nitrogen

potassium

chlorine

A

chlorine

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18
Q
  1. Ions of which element do not cause hard water?

calcium

iron

magnesium

potassium

A

potassium

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19
Q
  1. The most abundant element in our bodies, by mass, is

oxygen

nitrogen

carbon

sodium

20
Q
  1. Because water molecules are associated through hydrogen bonding, water has a high

temperature

density

boiling point

solubility

Study These Flashcards
A

boiling point

20
Q
  1. The element present in complete fertilizers are

C, H, O

C, H, N

Ca, Mg, S

N, P, K

21
Q
  1. The only common liquid on the Earth is

mercury

water

petroleum

oxygen

22
25. Because oil slick do not dissolve in water, one might expect oil to be composed of ____ molecules. nonpolar polar subpolar arctic
nonpolar
23
26. Which of the following is not true? solubility of gases in water increases with increasing temperature solubility of gases in water increases with increasing pressure solubility of gases in water is important for fish populations solubility of both oxygen and nitrogen gas increases with pressure
solubility of gases in water increases with increasing temperature
24
27. Despite repeated attempts, no one has ever been able to separate chlorine into simpler substances. Therefore we accept chlorine as a(n) compound element mixture polar molecule
element
25
28. A scientific statement, often mathematical in form, that summarizes experimental data is called a law theory hypothesis proposition
law
26
29. All samples of a pure substance contain no chemicals have the same composition have a variable composition are heterogeneous
have the same composition
27
31. Isotopes have the same mass number atomic number atomic mass half-life
atomic number
27
30. Elements are placed in groups in the periodic table on the basis of alphabetical listing similar chemical properties number of neutrons in the nucleus order of discovery
similar chemical properties
28
32. Which hydrogen isotope contains one neutron? protium deuterium tritium none of these
deuterium
29
33. Which substance would most likely have ionic bonds? HCl Na2O Cl2 N2O
Na2O
30
34. Which substance has polar covalent bonds? CaF2 F2 HF H2
HF
31
35. The water molecule is bent linear pyramidal pyramidal
bent
32
36. In nearly all molecules, carbon forms ____ bonds. 2 3 4 5
4
33
37. A chemical bond formed by the equal sharing of electrons is called ionic nonpolar covalent polar covalent coordinate
nonpolar covalent
34
38. During fermentation, the final products formed are CO2, and either lactic acid or water glucose alcohol riboflavin coenzyme
alcohol
35
39. The acid found in stomach fluid is NH3 CH3COOH HCl H2SO4
HCl
36
40. All “liquid chlorine” bleach solutions contain 5.25% NH3 NaOH NaOCl HCl
NaOCl
37
41. The atomic particle located outside of the nucleus is the proton positron neutron electron
electron
38
42. In a covalent bond, electrons are shared split lost added
shared
39
43. A substance composed of a large molecule that is made of many smaller similar repeating units is called glycerol polymer fatty acid monosaccharide
polymer
40
44. An enzyme is a deoxyribose lipid protein ribose
protein
41
46. A hormone that enables the cells to utilize glucose is gastrin insulin testosterone cortisone
insulin
41
45. The storehouse of energy in the cell is ATP nucleus cell membrane DNA
ATP
42
47. Tobacco smoke contains caffeine nicotine niacine morphine
nicotine
43
48. Rod-shaped bacteria are called bacilli spirilla cocci
bacilli
44
49. Bacteria may survive unfavorable conditions by splitting in half forming flagella forming spores forming bacteriophage
forming spores
45

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