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11 questions
A sample of iodine is easiest to ship as a powder because it is _______, making it easy to break into small pieces.
brittle
volatile
thermally insulating
Helium is less ______ than the elements that make up the air we breathe, so a balloon filled with helium will float in air.
dense
brittle
electrically insulating
Plastic is a compound of nonmetallic elements, so its _________ properties make it a popular coating for electric wires to prevent the current from escaping.
electrically insulating
brittle
dense
Which nonmetal is the most reactive out of the following: neon, selenium, fluorine.
Neon
Selenium
Fluorine
Which nonmetal is the least reactive out of the following: neon, selenium, fluorine.
Neon
Selenium
Fluorine
Choose the nonmetallic elements from the list. Check all that apply. (Hint: there are three that should be checked)
carbon
oxygen
boron
polonium
argon
Identify which elements are halogens (group 17).
Astatine (At)
Nitrogen (N)
Krypton (Kr)
Chlorine (Cl)
Sulfur (S)
Identify which elements are noble gases (group 18).
Astatine (At)
Nitrogen (N)
Krypton (Kr)
Chlorine (Cl)
Sulfur (S)
Which nonmetals have similar chemical properties (hint: groups)? Check all that apply.
sulfur
nitrogen
selenium
oxygen
carbon
Which nonmetal is the most reactive out of the following: bromine, chlorine, & iodine.
bromine
chlorine
iodine
Which nonmetal is the least reactive out of the following: bromine, chlorine, & iodine.
bromine
chlorine
iodine