CHEM 1205 ACTUAL FINAL EXAMS UPDATED
QUESTIONS AND ANSWERS SURE A+
✔✔How are isotopes written? - ✔✔AZX Notation
✔✔What is atomic weight? - ✔✔The weighted average of the masses of the naturally
occurring isotopes of a particular element reported in AMU.
✔✔What is a radioisotope? - ✔✔Unstable and spontaneously emits energy to form a
more stable nucleus.
✔✔What are the four types of nuclear radiation? - ✔✔Alpha particle, beta particle,
positron, gamma ray
✔✔Do metals for cations or anions? - ✔✔Cations
✔✔Do nonmetals form cations or anions? - ✔✔anions
✔✔What is the ionic bond the result of? - ✔✔Force of attraction between cation and
anion
✔✔What should be the sum of the charges in an ionic compound be? - ✔✔Zero
, ✔✔What is the systematic name? - ✔✔When a transition metal is able to form two
different cations, you can use roman numerals to indicate charge.
Iron (II) or Iron (III)
✔✔How are anions named? - ✔✔By changing the ending of the name to -ide
✔✔When naming main group elements what are things to remember? - ✔✔- You do not
need to specify the charge
- You do not need to specify how many ions of each are needed to balance the charges.
sodium fluoride
magnesium chloride
✔✔When naming compounds with transition metal ions what are things to remember? -
✔✔- Write the cation first
- The transition metal must have the roman numeral to determine the charge
Tin(IV) Oxide
✔✔What is the difference between covalent bonding and ionic bonding? - ✔✔Ionic:
Metal and nonmetal
Covalent: Two nonmetals
✔✔Do ionic compounds have high or low melting points? - ✔✔High
✔✔What is a polyatomic ion? - ✔✔A cation or anion that contains more than one atom
✔✔NH4+ - ✔✔Ammonium
✔✔H3O+ - ✔✔Hydronium
✔✔CH3CO2- - ✔✔Acetate
✔✔HCO3- - ✔✔Bicarbonate
✔✔CN- - ✔✔Cyanide
✔✔OH- - ✔✔Hydroxide
✔✔NO3- - ✔✔Nitrate
✔✔CO3 2- - ✔✔Carbonate
QUESTIONS AND ANSWERS SURE A+
✔✔How are isotopes written? - ✔✔AZX Notation
✔✔What is atomic weight? - ✔✔The weighted average of the masses of the naturally
occurring isotopes of a particular element reported in AMU.
✔✔What is a radioisotope? - ✔✔Unstable and spontaneously emits energy to form a
more stable nucleus.
✔✔What are the four types of nuclear radiation? - ✔✔Alpha particle, beta particle,
positron, gamma ray
✔✔Do metals for cations or anions? - ✔✔Cations
✔✔Do nonmetals form cations or anions? - ✔✔anions
✔✔What is the ionic bond the result of? - ✔✔Force of attraction between cation and
anion
✔✔What should be the sum of the charges in an ionic compound be? - ✔✔Zero
, ✔✔What is the systematic name? - ✔✔When a transition metal is able to form two
different cations, you can use roman numerals to indicate charge.
Iron (II) or Iron (III)
✔✔How are anions named? - ✔✔By changing the ending of the name to -ide
✔✔When naming main group elements what are things to remember? - ✔✔- You do not
need to specify the charge
- You do not need to specify how many ions of each are needed to balance the charges.
sodium fluoride
magnesium chloride
✔✔When naming compounds with transition metal ions what are things to remember? -
✔✔- Write the cation first
- The transition metal must have the roman numeral to determine the charge
Tin(IV) Oxide
✔✔What is the difference between covalent bonding and ionic bonding? - ✔✔Ionic:
Metal and nonmetal
Covalent: Two nonmetals
✔✔Do ionic compounds have high or low melting points? - ✔✔High
✔✔What is a polyatomic ion? - ✔✔A cation or anion that contains more than one atom
✔✔NH4+ - ✔✔Ammonium
✔✔H3O+ - ✔✔Hydronium
✔✔CH3CO2- - ✔✔Acetate
✔✔HCO3- - ✔✔Bicarbonate
✔✔CN- - ✔✔Cyanide
✔✔OH- - ✔✔Hydroxide
✔✔NO3- - ✔✔Nitrate
✔✔CO3 2- - ✔✔Carbonate
