Is the melting point of an object a physical or chemical property

Truck traveling west on the highway experiences an acceleration to the east. what could be the cause of this acceleration

Which of these is not a possible type of energy transformation? a. electrical energy into light energy b. sound energy into nuclear energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Which of the following compounds would be primarily ionic? methane, ch4, ammonia nh3, calcium chloride, cacl2, or carbon dioxide, co2