SCH 3U1 Mass and Moles Lab Worksheet

SCH 3U1 Mass and Moles Lab Worksheet

 
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Name: Date: Student Exploration: Moles Get the Gizmo ready: Activity A: Molar Mass ● Select the AVOGADRO CONSTANT tab. ● Turn on Show hints and check that Copper (Cu) is selected. Introduction: Since atoms are so tiny, chemists have devised a unit known as the mole. A mole represents a macroscopic quantity of matter that can be used in the laboratory. One mole of any element has the same mass in grams as its atomic mass in u. Question: How many particles are in a mole? 1. Explore: Note the average atomic mass of copper on the nano-balance. Add atoms to the larger balance until it registers the same number (in g) as the reading on the nano-balance (in u). Use the Exponent slider to help get the correct amount. Stop adding atoms when the readings on both balances match exactly (to the nearest 0.001 g). How many atoms did you need to add?



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