Which properties describe elements that are nonmetal gases? Select all that apply. A) composed of an extended structure

B) composed of individual atoms or diatomic molecules

C) high melting point

D) low melting point

E) strong attractions between particles

DF)

weak attractions between particles

Which process describes vaporization that takes place below the surface of a liquid? condensation melting boiling evaporation

Is cutting your nails a physical or chemical change

Can anyone explain 1. review your spectrometry data and use the known elements to identify the star's composition. which unknown elements make up this star? justify your element selections. 2. in parts i and ii of the lab, what happened to the electrons of each element to produce the different colors of light? explain your answers using important terms from the lesson and information provided in the laboratory. 3. stars composed of heavier (more massive) elements are often slightly older than stars made predominantly from hydrogen and helium. based on your data, is the newly discovered star a younger star? explain your answer.