Please need help Which of the following describes the molecules in a sample of water as the temperature of the water changes from 20°C to 30°C? A. The molecules speed up and their average kinetic energy increases. B. The molecules slow down and their average kinetic energy decreases. C. The molecules speed up and their average kinetic energy stays the same. D. The molecules slo w down and their average kinetic energy stays the same. following is the best example of heat transfer by radiation?

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.