Read the article. Use your understanding to answer the questions that follow. What type of source is this article?

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.

Jose and eric were given four samples in lab. the results of their analysis are shown in the table. based on the data they collected, which sample is most likely a metal?