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
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