Why are the noble gases such as helium (He) and neon (Ne) grouped together in the periodic table?
A- They are nonreactive gases.
B-They are highly reactive metallic solids.
C-They are dangerous gases when combined with water.
D-They are liquid at room temperature and have high boiling points.

Which statement about sound is not true? a. air particles travel with sound waves. b. sound waves cannot travel through a vacuum. c. sound waves exist even if no one hears them. d. air particles vibrate along the path of a sound wave.

Fugu, also known as puffer fish, is a sushi delicacy that can also be lethal. puffer fish contain a powerful toxin that can kill an adult a few hours after ingestion. sushi chefs who prepare fugu must be specially trained because any contamination of the toxin-free areas of the fish can be deadly. recently this toxin has been put to good use, as scientists have discovered that a purified form of it can treat severe pain in cancer patients. this recent scientific discovery would fall under which area of chemistry? applied biochemistry pure organic chemistry pure physical chemistry applied inorganic chemistry

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.