If the temperature outside is 60°F, what is the approximate temperature on the Celsius scale and the Kelvin scale? If the air temperature drops to 30°F during the night, how has the kinetic energy of the air particles changed?

Cr(oh)3 -> cr(3+) + 3oh-

7is b8 is d9 is c10 is a11 is d

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.