Which of these is a mixture? a. carbon dioxide b. salt water c. calcium d. potassium

If the particles in a sample of matter have an orderly arrangement and move only in place, the sample is a

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

Aperfume bottle is dropped in the corner of a room. the odor of the perfume can be detected on the other side of the room. which statement best describes this observation?