WGU D425 INTRO TO CHEMISTRY TEST EXAM WITH QUESTIONS AND 100% CORRECT ANSWERS|| LATEST AND COMPLETE VERSION WITH EXPERT VERIFIED SOLUTIONS|| ASSURED PASS

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WGU D425 INTRO TO CHEMISTRY TEST EXAM
WITH QUESTIONS AND 100% CORRECT
ANSWERS|| LATEST AND COMPLETE VERSION
2025-2026 WITH EXPERT VERIFIED SOLUTIONS||
ASSURED PASS
Protons - ANSWER: positive charge


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)

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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