A student wants to examine a substance without altering its composition. Which of the following describes a property of the substance that the student should examine? Toxicity, because it can be observed by altering the state of the substance
Boiling point, because it can be observed by altering the state of the substance
Toxicity, because it can be observed by replacing the atoms of the substance with new atoms
Boiling point, because it can be observed by replacing the atoms of the substance with new atoms

- "the acute form of diverticulitis can manifest itself with one or more severe attacks of infection and inflammation.

the inflammation of diverticulitis can eventually result in a bowel obstruction, which may cause constipation, thin stools, diarrhea, abdominal swelling or bloating, and abdominal pain."

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.