Straighterline CHEM101 Final Exam
Questions With Correct Answers
total |number |of |neutrons |and |protons |in |an |atom; |# |protons |+ |# |electrons |- |VERIFIED |ANSWER✔✔-
Mass |Number
Most |nonmetallic |elements |are |found |in |which |block |of |the |periodic |table? |- |VERIFIED |ANSWER✔✔-p
Ernest |Rutherford |disproved |J.J. |Thomson's |plum-pudding |model |of |the |atom |by |showing |that... |-
|VERIFIED |ANSWER✔✔-Positive |matter |is |concentrated |in |the |central |core
Plants |use |up |copious |amounts |of |which |alkali |metal, |preventing |most |of |it |from |being |washed |out |to
|sea? |- |VERIFIED |ANSWER✔✔-Potassium
What |is |the |ratio |of |reactants |and |products |in |the |chemical |equation?
__NaOH |+ |__H2SO4 |--> |__Na2SO4 |+ |__H2O |- |VERIFIED |ANSWER✔✔-2:1:1:2
What |is |Avogadro's |number? |- |VERIFIED |ANSWER✔✔-the |number |of |ATOMS |in |12g |of |Carbon-12
1 |g |= |6.022 |× |1023 |amu
What |is |the |reducing |agent |in |the |following |equation?
Mg(s) |+ |2HCl(aq) |-> |MgCl2(aq) |+ |H2(g) |- |VERIFIED |ANSWER✔✔-Mg
Which |arrangement |accurately |describes |the |standard |entropy |values |at |different |phases? |- |VERIFIED
|ANSWER✔✔-(s) |< |(l) |< |(g)
What |are |the |most |stable |isotopes? |- |VERIFIED |ANSWER✔✔-2, |8, |20, |50, |82 |or |126 |protons
,What |element |has |been |oxidized |and |what |element |has |been |reduced?
3CuS |+ |8HNO3 |--> |3CuSO4 |+ |8NO |+ |4H2O |- |VERIFIED |ANSWER✔✔-S |= |oxidized
N |= |reduced
How |do |you |convert |from |moles |to |grams? |- |VERIFIED |ANSWER✔✔-multiply |the |atomic |mass |(grams)
|by |the |number |of |moles
How |do |you |convert |from |grams |to |moles? |- |VERIFIED |ANSWER✔✔-Divide |the |total |number |of |grams
|by |the |atomic |mass |(grams) |of |1 |mole
measure |of |the |amount |of |matter |- |VERIFIED |ANSWER✔✔-Mass
made |from |atoms |of |2+ |elements |that |are |chemically |bonded; |cannot |be |separated |into |simpler
|substances |by |any |physical |process; |can |be |separated |by |a |chemical |reaction |- |VERIFIED
|ANSWER✔✔-Compound
Definite |shape |and |volume
Doesn't |conform |to |shape |of |container
Particles |are |very |close |together |in |orderly |fashion |with |little |freedom |of |motion |- |VERIFIED
|ANSWER✔✔-Solid
Definite |volume, |indefinite |shape
Conforms |to |shape |of |the |part |of |the |container |it |fills
Particles |are |close |together |but |not |rigidly |in |position |with |freedom |to |move |past |each |other |-
|VERIFIED |ANSWER✔✔-Liquid
No |definite |shape |or |volume
Conforms |to |shape |and |volume |of |container
, Particles |separated |by |distances |very |large |compared |to |size |of |particles |- |VERIFIED |ANSWER✔✔-Gas
Color, |melting |point, |boiling |point
Observed |and |measured |without |changing |identity |of |substance |- |VERIFIED |ANSWER✔✔-Physical
|Property
Observed |by |performing |a |chemical |change |- |VERIFIED |ANSWER✔✔-Chemical |Property
Combination |of |2+ |elements, |each |retains |its |identity |and |properties
Can |be |separated |by |physical |means |into |pure |components |without |changing |identity |of |compounds |-
|VERIFIED |ANSWER✔✔-Mixture
fixed |composition |and |differs |from |a |mixture |(every |sample |has |same |properties |and |composition) |-
|VERIFIED |ANSWER✔✔-Pure |Substance
molecule |with |a |charge
contain |more |than |1 |atom |chemically |bonded |together |- |VERIFIED |ANSWER✔✔-Polyatomic |Ion
atoms |with |charge |formed |by |loss |or |gain |of |an |electron |- |VERIFIED |ANSWER✔✔-ions
positive |ion, |may |have |roman |numeral |- |VERIFIED |ANSWER✔✔-Cation
negative |ion, |element |ends |in |-ide |- |VERIFIED |ANSWER✔✔-Anion
atom |of |an |element |that |has |a |different |mass |because |of |a |different |number |of |neutrons, |but |same
|atomic |number |- |VERIFIED |ANSWER✔✔-isotope
total |number |of |protons |in |an |atom; |also |indicates |number |of |electrons |- |VERIFIED |ANSWER✔✔-
Atomic |Number
Questions With Correct Answers
total |number |of |neutrons |and |protons |in |an |atom; |# |protons |+ |# |electrons |- |VERIFIED |ANSWER✔✔-
Mass |Number
Most |nonmetallic |elements |are |found |in |which |block |of |the |periodic |table? |- |VERIFIED |ANSWER✔✔-p
Ernest |Rutherford |disproved |J.J. |Thomson's |plum-pudding |model |of |the |atom |by |showing |that... |-
|VERIFIED |ANSWER✔✔-Positive |matter |is |concentrated |in |the |central |core
Plants |use |up |copious |amounts |of |which |alkali |metal, |preventing |most |of |it |from |being |washed |out |to
|sea? |- |VERIFIED |ANSWER✔✔-Potassium
What |is |the |ratio |of |reactants |and |products |in |the |chemical |equation?
__NaOH |+ |__H2SO4 |--> |__Na2SO4 |+ |__H2O |- |VERIFIED |ANSWER✔✔-2:1:1:2
What |is |Avogadro's |number? |- |VERIFIED |ANSWER✔✔-the |number |of |ATOMS |in |12g |of |Carbon-12
1 |g |= |6.022 |× |1023 |amu
What |is |the |reducing |agent |in |the |following |equation?
Mg(s) |+ |2HCl(aq) |-> |MgCl2(aq) |+ |H2(g) |- |VERIFIED |ANSWER✔✔-Mg
Which |arrangement |accurately |describes |the |standard |entropy |values |at |different |phases? |- |VERIFIED
|ANSWER✔✔-(s) |< |(l) |< |(g)
What |are |the |most |stable |isotopes? |- |VERIFIED |ANSWER✔✔-2, |8, |20, |50, |82 |or |126 |protons
,What |element |has |been |oxidized |and |what |element |has |been |reduced?
3CuS |+ |8HNO3 |--> |3CuSO4 |+ |8NO |+ |4H2O |- |VERIFIED |ANSWER✔✔-S |= |oxidized
N |= |reduced
How |do |you |convert |from |moles |to |grams? |- |VERIFIED |ANSWER✔✔-multiply |the |atomic |mass |(grams)
|by |the |number |of |moles
How |do |you |convert |from |grams |to |moles? |- |VERIFIED |ANSWER✔✔-Divide |the |total |number |of |grams
|by |the |atomic |mass |(grams) |of |1 |mole
measure |of |the |amount |of |matter |- |VERIFIED |ANSWER✔✔-Mass
made |from |atoms |of |2+ |elements |that |are |chemically |bonded; |cannot |be |separated |into |simpler
|substances |by |any |physical |process; |can |be |separated |by |a |chemical |reaction |- |VERIFIED
|ANSWER✔✔-Compound
Definite |shape |and |volume
Doesn't |conform |to |shape |of |container
Particles |are |very |close |together |in |orderly |fashion |with |little |freedom |of |motion |- |VERIFIED
|ANSWER✔✔-Solid
Definite |volume, |indefinite |shape
Conforms |to |shape |of |the |part |of |the |container |it |fills
Particles |are |close |together |but |not |rigidly |in |position |with |freedom |to |move |past |each |other |-
|VERIFIED |ANSWER✔✔-Liquid
No |definite |shape |or |volume
Conforms |to |shape |and |volume |of |container
, Particles |separated |by |distances |very |large |compared |to |size |of |particles |- |VERIFIED |ANSWER✔✔-Gas
Color, |melting |point, |boiling |point
Observed |and |measured |without |changing |identity |of |substance |- |VERIFIED |ANSWER✔✔-Physical
|Property
Observed |by |performing |a |chemical |change |- |VERIFIED |ANSWER✔✔-Chemical |Property
Combination |of |2+ |elements, |each |retains |its |identity |and |properties
Can |be |separated |by |physical |means |into |pure |components |without |changing |identity |of |compounds |-
|VERIFIED |ANSWER✔✔-Mixture
fixed |composition |and |differs |from |a |mixture |(every |sample |has |same |properties |and |composition) |-
|VERIFIED |ANSWER✔✔-Pure |Substance
molecule |with |a |charge
contain |more |than |1 |atom |chemically |bonded |together |- |VERIFIED |ANSWER✔✔-Polyatomic |Ion
atoms |with |charge |formed |by |loss |or |gain |of |an |electron |- |VERIFIED |ANSWER✔✔-ions
positive |ion, |may |have |roman |numeral |- |VERIFIED |ANSWER✔✔-Cation
negative |ion, |element |ends |in |-ide |- |VERIFIED |ANSWER✔✔-Anion
atom |of |an |element |that |has |a |different |mass |because |of |a |different |number |of |neutrons, |but |same
|atomic |number |- |VERIFIED |ANSWER✔✔-isotope
total |number |of |protons |in |an |atom; |also |indicates |number |of |electrons |- |VERIFIED |ANSWER✔✔-
Atomic |Number
