Which of the below would result in rearrangement of atoms at molecular level a) salt dissolved in water
b) broken tree branches
c) gasoline combusts in an engine
d) steam rising from hot pavement

If i add water to oil what will happen

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

A1.5l container holds p.50 grams of an unknown gas at a pressure of 0.44 atm and a temperature of 50.c what is the molar mass of the unknown gas