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ECU CHEM 1120 Midterm Exam Review – Practice Test & Chemistry Prep

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2025/2026 Written for academic year
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Course Chem 1120
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ECU CHEM 1120 Midterm Exam Review – Practice Test & Chemistry Prep

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ECU CHEM 1120 Midterm Exam Review – Practice Test & Chemistry Prep


positively charged ion - ANS ✔✔cation



Carole made a _____ when she said there are more hummingbirds at the feeder because of the
drought - ANS ✔✔hypothesis



The electrons found at the highest energy level - ANS ✔✔valence electrons



Atomic number refers to - ANS ✔✔the number of protons in an atom



Difference between crests or troughs in a wave is the - ANS ✔✔wavelength



the subatomic particle that adds mass to the atom and is the reason not all matter is hydrogen -
ANS ✔✔neutron



Greek for amber - ANS ✔✔electron



the number of crests per second is - ANS ✔✔frequency



Greek for indivisible or not to cut - ANS ✔✔atom



3d region of probability - ANS ✔✔orbital



Part of the atom where mass is concentrated - ANS ✔✔nucleus



amount of space occupied by matter - ANS ✔✔volume

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