CHEM 1411 LAB FINAL EXAM
QUESTIONS WITH 100% CORRECT
ANSWERS L LATEST VERSION 2025/2026.
Precision - ANS repeated values not necessarily close to an accepted value.
Accuracy - ANS Value close to an accepted value
List three observations that indicate that a chemical reaction has occurred - ANS formation of
precipitate, temperature change, color change
Amohoteric - ANS Ability to act as a base and acid
Why are only nitrate salts of the metal ions used in this experiment? - ANS All nitrates are
soluble, so for something like a lead ion that will typically precipitate, a lead nitrate will dissolve
in water.
Chemical periodicity - ANS The variations in properties of chemical elements as depicted by
their position in periodic table.
Activity Series - ANS List of metals and their half reactions arranged in order of decreasing
ease of oxidation or increasing ability to take an electron.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
QUESTIONS WITH 100% CORRECT
ANSWERS L LATEST VERSION 2025/2026.
Precision - ANS repeated values not necessarily close to an accepted value.
Accuracy - ANS Value close to an accepted value
List three observations that indicate that a chemical reaction has occurred - ANS formation of
precipitate, temperature change, color change
Amohoteric - ANS Ability to act as a base and acid
Why are only nitrate salts of the metal ions used in this experiment? - ANS All nitrates are
soluble, so for something like a lead ion that will typically precipitate, a lead nitrate will dissolve
in water.
Chemical periodicity - ANS The variations in properties of chemical elements as depicted by
their position in periodic table.
Activity Series - ANS List of metals and their half reactions arranged in order of decreasing
ease of oxidation or increasing ability to take an electron.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
