(Question)
Q: The number of electrons in the outer energy level determines what property of nonmetals? Choices: - density - permeability - vibration - reactivity A:
(Answer)
reactivity

(Question)
Q: Ringworm and athlete's foot are common human diseases caused by types of what? Choices: - viruses - multicellular bacteria - acids - fungi A:
(Answer)
fungi

(Question)
Q: What is formed when the ceiling of an underground cave collapses? Choices: - hill - groundwater - mountain - sinkhole A:
(Answer)
sinkhole