Which of the following is an example of a physical change?:

A. evaporation in a swamp cooler

B. electricity produced by a dry cell

C. digestion of a hamburger

D. rusting of a car body

What is true for a substance that releases energy

Imagine if during the cathode ray experiment, the size of the particles of the ray was the same as the size of the atom forming the cathode. which other model or scientific observation would have also been supported? 1. this would support dalton's postulates that proposed the atoms are indivisible because no small particles are involved. 2. this would support bohr's prediction about electrons moving in orbits having specific energy. 3. this would support bohr's prediction about electrons being randomly scattered around the nucleus in the atom. 4. this would support dalton's postulates that proposed that atoms combine in fixed whole number ratios to form compounds.

Compare sympathetic and parasympathetic