Are leaves that change colors on a tree a physical or chemical change?

Complete this brønsted-lowry reaction placing each product by its appropriate label. hso4- + hcn

List the two type of transporst that the cell in orde to transport molecules acroos the membrane

What does a particular point on a line of a phase diagram represent? o a. the maximum temperature a substance can exist at without bonds breaking b. the pressure created by the kinetic energy of molecules at a particular temperature c. the melting point or boiling point of a substance at a specific pressure d. the conditions in which temperature and pressure have equal effects on a substance