CHEM 120 EXAM 1 WKU EXAM WITH CORRECT QUESTIONS AND ANSWERS 2025

CHEM 120 EXAM 1 WKU EXAM WITH
CORRECT QUESTIONS AND ANSWERS
2025

What are the two rows at the bottom of the periodic table called?

- CORRECT-ANSWERSIanthanides and actinides




Group names? (1, 2, 17, and 18) - CORRECT-ANSWERS1) Alkali metals

(+1 charge)

2) Alkaline earth metals (+2 charge)

17) Halogens (-1 charge)

18) Noble gases (-2 charge)




Anything that has mass/can be perceived and takes up space -

CORRECT-ANSWERSMatter




A measure of the amount of matter in an object - CORRECT-

ANSWERSMass

, Phase change: solid to liquid - CORRECT-ANSWERSFreezing <——>

melting




Phase change: liquid to gas - CORRECT-ANSWERSBoiling <——>

condensation




Phase change: solid to gas - CORRECT-ANSWERSSublimation <——>

condensation




Change of state/condition but not substance itself - CORRECT-

ANSWERSPhysical change




A change in matter that produces one or more new substances -

CORRECT-ANSWERSChemical change




A characteristic of a pure substance that can be observed without

changing it into another substance (boiling/melting point, color,

density, hardness, and electrical conductivity) - CORRECT-

ANSWERSPhysical property