Challenge 5

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

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 cm3

Densities of Metals

Lead – 11.34 g/cm3

Gold -19.3 g/cm3

Silver -10.5 g/cm3

Platinum - 21.4 g/cm3

Copper - 8.9g/cm3

D = M / V

A = 680.4 g

B = 534 g

C = 1,158 g

D = 1,284 g

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 cm3

Densities of Metals

Lead – 11.34 g/cm3

Gold -19.3 g/cm3

Silver -10.5 g/cm3

Platinum - 21.4 g/cm3

Copper - 8.9g/cm3

D = M / V

A = 680.4 g

B = 534 g

C = 1,158 g

D = 1,284 g