Quiz 22 Flashcards
- Atomic mass is equivalent to _____ of the atomic weight of carbon.
12
1/12
1/3
¼
1/12
- The energy needed to remove the most loosely bounded electron of an atom.
ionization energy
electronegativity
electron affinity
kinetic energy
ionization energy
- Calcium carbonate is also known as
chalk
charcoal
feldspar
silica
chalk
- In an acid-base titration using phenolphthalein indicator, the equivalence point is manifested by the appearance of what color?
yellow
red
purple
blue
purple
- Oil of wintergreen is also known as
methyl salicylate
ethyl salicylate
benzyl acetate
linalyl acetate
methyl salicylate
- One gram mole of a specie is that weight of the specie equivalent to its
molecular weight
atomic number
atomic mass
number of neutrons
molecular weight
- Defines a base as a compound that dissolves in water to produce hydroxide ions.
Arrhenius
Lewis
Bronsted
Lowry
Arrhenius
- Cr(NH3)5SO4Cl represents ___ atoms.
27
12
18
24
27
- The mass contribution of an electron in an atom is
1/1837 that of proton
equal to that of proton
equal to that of neutron
half that of the nucleus
1/1837 that of proton
- Along a row in the periodic table of elements have the same
energy level
configuration
size
electronegativity
energy level
- Hydrogen is common to all
acids
salts
oxides
metals
acids
- The electrons of metals are free to move in a solid. This explains why
metals are unstable
metals can be easily molded
metals have high reflectivity
metals have high conductivity
metals have high conductivity
- Which of the following solution in water has the lowest pH?
ammonium acetate
sodium chloride
ammonium chloride
ammonium chloride
- How many pi bonds are there in a double bond?
0
1
2
3
1
- All isotopes of a given element have?
equal number of protons and neutrons
the same number of protons
the same number of atomic mass units
the same number of neutrons
the same number of protons
- Which will dissolve fastest in coffee?
lump sugar in hot coffee
granular sugar in hot coffee
granular sugar in cold coffee
lump sugar in cold coffee
granular sugar in hot coffee
- As water boils, the temperature
increases
decreases
remains constant at 100˚C until all is changed to vapor
varies
remains constant at 100˚C until all is changed to vapor
- How may neutrons are there in a platinum atom? Atomic number = 78 ‘ mass number = 195
78
195
117
273
117
- 1s²2s²2p5 is the electronic configuration for
sodium
fluorine
nitrogen
oxygen
fluorine
- A lab technician may prevent a blood sample from clotting by adding a compound that prevents ___ from entering the clotting process.
potassium citrate
vitamin K
sodium ion
calcium ion
calcium ion
- The special region of an enzyme where the substrate molecules fits is called the
activation energy
substrate bond
active site
catalyst
active site
- It is the dimensionless ratio of the weight of a body to the weight of an equal volume of a substance taken as a standard.
specific weight
specific gravity
mass density
bulk modulus of elasticity
specific gravity
- The evaporative loss of water from macroscopic plants is
evaporation
condensation
transpiration
respiration
transpiration
- It is a measure of the acidic or basic nature of water.
alkalinity
pH
acidity
hardness
pH
- Which of the following is the compressibility factor of an ideal gas?
1
2
1.5
0
1
