2. Which of the following statements is accurate? Explain. "The mass of the student is 56 kg." The weight of the student is 56 kg." 3. Three elements in Group 8A of the periodic table are called noble gases: helium, neon, and argon. Explain the term noble "in this particular setting.

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.