CHEMISTRY 113 FINAL EXAM
QUESTIONS & ANSWERS 100%
CORRECT
Homogeneous Mixture - ANSWERA mixture in which the composition is uniform
throughout
Heterogeneous Mixture - ANSWERA mixture that is not uniform in composition;
components are not evenly distributed throughout the mixture.
SI Unit of Length - ANSWERMeter (m)
SI Unit of Mass - ANSWERKilogram (kg)
SI Unit of Time - ANSWERSecond (s)
SI Unit of Temperature - ANSWERKelvin (K)
SI Unit of Amount - ANSWERMole (mol)
Meter to Nanometer (nm) conversion factor - ANSWER10^-9 (1m = 1,000,000,000
nm)
Physical Change - ANSWERA change that affects the appearance but not the
chemical makeup of a substance. (Ex: Phase changes, expansion upon heating,
breaking, cutting)
Chemical Change - ANSWERA change in which one or more substances combine or
break apart to form new substances. (Ex: Samples of hydrogen and oxygen gas
combine to form H2O upon heating, burning, dissolving, digesting, cooking, rusting)
Gas to Solid Phase Change - ANSWERDeposition
Meter to Micrometer (um) conversion factor - ANSWER10^-6 (1m = 1,000,000 um)
Meter to Millimeter (mm) conversion factor - ANSWER10^-3 (1m = 1000 mm)
Meter to Kilometer (km) conversion factor - ANSWER10^3 (1km = 1000 m)
Solid to Gas Phase Change - ANSWERSublimation
When given mass and volume, how do you calculate density? - ANSWERD= m/v
Which scientist determined mass and charge of an electron by irradiating oil droplets
with X-Rays and observing their behavior? - ANSWERRobert Millikan
, What is the oxidation number of an element in its elemental form, such as Fe, Cl2, or
S8? - ANSWER0
What conditions must be true to there is no attraction between particles and the
particles have nearly zero volume (Ideal Gas)? - ANSWERLow Pressure and High
Temperature
Ideal Gas Law - ANSWERPV=nRT
Which is stronger, LDF or Covalent bonds? - ANSWERCovalent bonds
Rank London dispersion forces, Dipole-Dipole interactions and Hydrogen bonds in
order from strongest to weakest - ANSWERHydrogen Bonding > DDI > LDF
At high temperatures, do you have more or less Kinetic Energy? - ANSWERmore
Critical Point - ANSWERWhere critical temperature and critical pressure are present
(The temperature and pressure at which the gas and liquid states of a substance
become identical and form one phase). If you pass this point, you arrive at a
supercritical fluid
Do stronger intermolecular forces result in a higher or lower freezing point? -
ANSWERHigher
Which three molecules form Hydrogen Bonds with Hydrogen molecules? -
ANSWERNitrogen (N), Oxygen (O) and Fluorine (F)
Pure Substance - ANSWERAn elemental substance (Au) or a compound (H2O)
Intensive Property - ANSWERdo NOT depend on amount (color, shape, MP,
density)
Extensive Property - ANSWERDOES depend on amount (volume, mass, length)
Kelvin to Celsius conversion - ANSWERK = C + 273.15
Metal Properties - ANSWERHigh luster, good conductors of heat and electricity,
ductile, malleable, high density, high MP, solid at room temp (except Hg)
Low IEs, oxidized during chemical reactions, oxide bases react with acids to form
salts and water, oxides that dissolve in water react to form metal hydroxides
Nonmetal Properties - ANSWERNo luster, poor conductors, hard and brittle, low
density and MP (except carbon)
tend to become ANIONS when reacting with metals, oxides are acidic and dissolve
in H2O to form acids, dissolve in basic solutions to form a salt plus water
Who discovered that the known elements combined in indefinite proportions and
developed the atomic theory? - ANSWERJohn Dalton
QUESTIONS & ANSWERS 100%
CORRECT
Homogeneous Mixture - ANSWERA mixture in which the composition is uniform
throughout
Heterogeneous Mixture - ANSWERA mixture that is not uniform in composition;
components are not evenly distributed throughout the mixture.
SI Unit of Length - ANSWERMeter (m)
SI Unit of Mass - ANSWERKilogram (kg)
SI Unit of Time - ANSWERSecond (s)
SI Unit of Temperature - ANSWERKelvin (K)
SI Unit of Amount - ANSWERMole (mol)
Meter to Nanometer (nm) conversion factor - ANSWER10^-9 (1m = 1,000,000,000
nm)
Physical Change - ANSWERA change that affects the appearance but not the
chemical makeup of a substance. (Ex: Phase changes, expansion upon heating,
breaking, cutting)
Chemical Change - ANSWERA change in which one or more substances combine or
break apart to form new substances. (Ex: Samples of hydrogen and oxygen gas
combine to form H2O upon heating, burning, dissolving, digesting, cooking, rusting)
Gas to Solid Phase Change - ANSWERDeposition
Meter to Micrometer (um) conversion factor - ANSWER10^-6 (1m = 1,000,000 um)
Meter to Millimeter (mm) conversion factor - ANSWER10^-3 (1m = 1000 mm)
Meter to Kilometer (km) conversion factor - ANSWER10^3 (1km = 1000 m)
Solid to Gas Phase Change - ANSWERSublimation
When given mass and volume, how do you calculate density? - ANSWERD= m/v
Which scientist determined mass and charge of an electron by irradiating oil droplets
with X-Rays and observing their behavior? - ANSWERRobert Millikan
, What is the oxidation number of an element in its elemental form, such as Fe, Cl2, or
S8? - ANSWER0
What conditions must be true to there is no attraction between particles and the
particles have nearly zero volume (Ideal Gas)? - ANSWERLow Pressure and High
Temperature
Ideal Gas Law - ANSWERPV=nRT
Which is stronger, LDF or Covalent bonds? - ANSWERCovalent bonds
Rank London dispersion forces, Dipole-Dipole interactions and Hydrogen bonds in
order from strongest to weakest - ANSWERHydrogen Bonding > DDI > LDF
At high temperatures, do you have more or less Kinetic Energy? - ANSWERmore
Critical Point - ANSWERWhere critical temperature and critical pressure are present
(The temperature and pressure at which the gas and liquid states of a substance
become identical and form one phase). If you pass this point, you arrive at a
supercritical fluid
Do stronger intermolecular forces result in a higher or lower freezing point? -
ANSWERHigher
Which three molecules form Hydrogen Bonds with Hydrogen molecules? -
ANSWERNitrogen (N), Oxygen (O) and Fluorine (F)
Pure Substance - ANSWERAn elemental substance (Au) or a compound (H2O)
Intensive Property - ANSWERdo NOT depend on amount (color, shape, MP,
density)
Extensive Property - ANSWERDOES depend on amount (volume, mass, length)
Kelvin to Celsius conversion - ANSWERK = C + 273.15
Metal Properties - ANSWERHigh luster, good conductors of heat and electricity,
ductile, malleable, high density, high MP, solid at room temp (except Hg)
Low IEs, oxidized during chemical reactions, oxide bases react with acids to form
salts and water, oxides that dissolve in water react to form metal hydroxides
Nonmetal Properties - ANSWERNo luster, poor conductors, hard and brittle, low
density and MP (except carbon)
tend to become ANIONS when reacting with metals, oxides are acidic and dissolve
in H2O to form acids, dissolve in basic solutions to form a salt plus water
Who discovered that the known elements combined in indefinite proportions and
developed the atomic theory? - ANSWERJohn Dalton
