Science Practice: Asking Questions and Defining Problems

Does ATP Provide Energy?

When using standard thermodynamic values, the chemical reaction whereby ATP is converted to ADP is found to have a positive value for ΔG. This would imply the reaction REQUIRES energy. However, analyzing the process under physiological conditions shows that ΔG is in fact negative, as expected.

Ice Clouds 2.0

What is some of the chemistry involved in the formation of ice clouds when boiling water is thrown into icy air?

Drinking Dinosaur Pee?!

It has been claimed that because all water ultimately ends up in the water cycle, we drink water that the dinosaurs peed out. What does chemistry have to say about this assertion?