A new mineral in the mine is very exciting news. On Dr. Rock's next survey report, he gets to update the number of known minerals to come out of the mine from 15 to 16! This is just one more reason that Dr. Rock's mine is a unique place on Earth. How can the idea that different minerals are formed in different environments provide evidence for energy and matter cycling?

Based on its chemical properties, identify the position of each chemical family on the periodic table.

Which of the following represents the balanced reduction half-reaction from the redox reaction? (2 points) pb + pd(no3)2 yields pb(no3)2 + pd pb yields pd2+ + e- pd2+ + 2e- yields pd pb + e- yields pb 2 pd2+ + 4 e- yields 2 pd

Freya built a model of the earth, sun, and moon. freya can cause her model to move in three different ways. she can turn the crank to model how the earth revolves around the sun, she can spin the globe to model how the earth rotates on its axis, and she can push the moon with her fingers to model how the moon revolves around the earth. how could freya best use her model to demonstrate the cause of the day/night cycle on earth?