Introduction_to_Moles_Gizmos_2020 | Introduction_to_Moles_Gizmos

Student Exploration: Moles Vocabulary: atomic mass, Avogadro constant, conversion factor, dimensional analysis, mole, molar mass, molecular mass, scientific notation, significant figures, unified atomic mass unit Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. In the image to the right, note a dozen eggs, a dozen donuts and a dozen roses. How many of each item do you have? I have 12 of each item according to the pictures on the right side. 2. Would a dozen of each object have the same mass? No, a dozen of each object would not have the same mass as every object has their own mass. 3. Suppose you have a dozen carbon atoms, a dozen gold atoms, and a dozen iron atoms. Even though you have the same number of each, would you expect them all to have the same mass? Explain. I would not expect a dozen atoms of carbon, gold and iron to have the same mass because each element has their own mass. For example, Iron (Fe) has a larger mass than carbon( C) , therefore, even though there are 12 atoms of iron and carbon, the dozen carbon atoms will have a significantly smaller mass. Gizmo Warm-up