Which formula equation shows a reversible reaction? 2Na+F2 -2NaF CaCO3 -CaO+CO2 NH4CL(s) -NH3(g)+HCL(g)

Compare and contrast physical changes with chemical changes.

What is the chemical name of the compound ti2o3? use the list of polyatomic ions and the periodic table to you answer.

What role does weathering have in shaping earth’s surface? a) it allows sediments to fall out of a medium. b) it sediments settle on a new surface. c) it breaks down older material into sediments. d) it transports sediments to a different location. will give brainliest, answer quickly.