WGU D425 INTRO TO CHEMISTRY OBJECTIVE FINAL EXAM SCRIPT 2026 QUESTIONS WITH CORRECT ANSWERS ALREADY PASSED

WGU D425 INTRO TO CHEMISTRY OBJECTIVE
FINAL EXAM SCRIPT 2026 QUESTIONS WITH
CORRECT ANSWERS ALREADY PASSED


◉ The atomic number of an element is the total number of which
particles in the nucleus. Answer: protons


◉ Electron. Answer: A subatomic particle that has a negative charge


◉ significant figures. Answer: a prescribed decimal place that
determines the amount of rounding off to be done based on the precision
of the measurement


◉ mass number. Answer: the sum of the number of neutrons and protons
in an atomic nucleus


◉ amu. Answer: atomic mass unit


◉ average atomic mass formula. Answer: (mass)(%)+(mass)(%)/100 (
% in decimal)

, ◉ atomic radius. Answer: the distance from the center of an atom's
nucleus to its outermost electron


◉ Energy level 1 holds how many electrons. Answer: up to 2 electrons


◉ Energy level 2 holds how many electrons. Answer: up to 8 electrons


◉ Energy level 3 holds how many electrons. Answer: up to 18 electrons


◉ Lewis Dot Structure. Answer: diagram of a molecule using dots to
represent valence electrons


◉ polyatomic ions. Answer: groups of atoms with an overall charge


◉ funtional groups. Answer: the components of organic molecules that
are most commonly involved in chemical reactions


◉ Alkane. Answer: a hydrocarbon containing only single covalent bonds


◉ Alkyne. Answer: carbon-carbon triple bond


◉ Alkene. Answer: double bond, carbon to carbon.