Suppose that you have a rod that is positively charged, a rod that is negatively charged and a stand that allows rotation. if you are handed a rod of unknown charge-state, could you determine if it has a positive charge, a negative charge or if it is neutral? explain

Yes

Explanation:

The law of electrostatics states that like charges repel, while unlike charges attract. When you place either of the charged rods on the rotating stand, bring the rod of unknown charge-state in its neigbourhood. If there is repulsion, it shows that both rods have same charge, while attraction would show opposite charges. If the rod is neutral, there would be no reaction, since net charge is zero.

the assestment will probley apele with cause and effect

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.