A polar molecule is a molecule whose ends have opposite electric charges. An example of a polar molecule is H2O or water. Water has 1 side which is positive and the other side which is negative. It is a dipole which means that the two sides are not having the same charges.
Answer:
C - commas indicate a natural pause in the sentence
The answer is c hopefully I helped you
hot air rises up in the balloon and lifts the balloon up
They are described through the use of four physical properties or macroscopic characteristics: pressure, volume, number of particles (chemists group them by moles) and temperature.