Which of the following is evidence of a physical change? A) burning
B) melting
C) decomposing
D) rusting

What overall charge must all compounds have

Substance a is a nonpolar liquid and has only dispersion forces among its constituent particles. substance b is also a nonpolar liquid and has about the same magnitude of dispersion forces among its constituent particles. when substance a and b are combined, they spontaneously mix.

Which of the following would have the lowest average kinetic energy