1. Challenge 5 L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/

2. The king wants to pick out a new crown but only wants one made of 100% pure gold, not gold plated or mixed with other metals. Can you help him find his new gold crown? The volume of each crown is 60 cm 3 Densities of Metals Lead – 11.34 g/cm 3 Gold -19.3 g/cm 3 Silver -10.5 g/cm 3 Platinum - 21.4 g/cm 3 Copper - 8.9g/cm 3 D = M / V A = 680.4 gB = 534 g C = 1,158 gD = 1,284 g

3. The king wants to pick out a new crown but only wants one made of 100% pure gold, not gold plated or mixed with other metals. Can you help him find his new gold crown? The volume of each crown is 60 cm 3 Densities of Metals Lead – 11.34 g/cm 3 Gold -19.3 g/cm 3 Silver -10.5 g/cm 3 Platinum - 21.4 g/cm 3 Copper - 8.9g/cm 3 D = M / V A = 680.4 gB = 534 g C = 1,158 gD = 1,284 g