Chemistry Final ACS Exam |Question and Answer| 100% Correct 2024/2025

Chemistry Final ACS Exam |Question and Answer| 100% Correct 2024/2025 Accuracy? *Ans* Closeness of measurements to the TRUE VALUE of what is being measured Precision? *Ans* Closeness of a SET of measurements How do you calculate Percent Error? *Ans* I experimental-accepted I ____________________ x 100 accepted value Are zeros infront of non-zero digis significant? *Ans* Nope! ex: 0.0071 is only 2 sig figs Are zeros at the end of a number and to the right of the decimal significant? *Ans* Yep! ex: 9.100 is 4 sig figs Addition/Subtraction in regards to sig figs? *Ans* Round numbers to the least number of decimal places Multiplaction/Division in regards to sig figs? *Ans* Round answers to the least amount of sig figs # of e- equal *Ans* the # of p+ Atomic Mass? *Ans* Number of protons in the nucleus (number on the left bottom corner of the chemical symbol) Atomic Mass Number? *Ans* Number of protons and neutrons (number on the left upper corner of the chemical symbol) Isotope? *Ans* Atoms of the same element, but with different masses (different number of neutrons) STUDY ELECTRON CONFIGURATIONS *Ans* STUDY ELECTRON CONFIGURATIONS Do columns or rows in the Periodic Table have similar patterns? *Ans* Columns (the "groups") have repeating patterns? Which area of the Periodic Table has greater metallicness? *Ans* Left and down has greater metallicness