Lighting a match results in light and heat since energy was not created by the match what transformation took place

Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)

What are transitions between a liquid and a solid called? identify which way they are transitioning

Which of the following statements best explains why chemistry is testable a) it can measure data by experiments b) it cannot add new evidence c) it cannot be verified d) it is biased