- Oxidation of iron will change the iron to yellow, red, or orange color
- Chemical weathering causes iron in rock to oxidize
- Rocks sometimes contain iron
- Hence, chemical weathering can cause iron in rock to oxidize and change the color of the rock to yellow, red, or orange

Hence, chemical weathering can cause iron in rock to oxidize and change the color of the rock to yellow, red, or orange
Question: Many natural rock formations change color over time. In Utah, for example, iron oxidized and formed red, orange, and yellow rock. Which of the following is the cause of this change?
Context: - Oxidation of iron will change the iron to yellow, red, or orange color 
- Chemical weathering causes iron in rock to oxidize 
- Rocks sometimes contain iron