2. Atoms & Elements

Which of the following elements is a nonmetal that is a homonuclear polyatomic solid?

Which of the following exists as a diatomic solid at room temperature?

A volatile liquid (one that easily evaporates) is put into a jar and the jar is then sealed. Does the mass of the sealed jar and its contents change upon the vaporization of the liquid?

Let a triangle represent atoms of element A and a circle represent atoms of element B. b. Draw an atomic view of the compound AB in a liquid state (molecules close together).

Is the red element on the following periodic table likely to be a gas, a liquid, or a solid?

Judge the following statements as true or false. If you believe a statement to be false, provide a corrected version. (d) Elements can exist in any of the three states of matter.