Which statement best describes what happens when oil and water are stirred together? 1. Water and oil molecules have opposite electrical charges, causing them to repel each other and separate.

2. Oil and water molecules have like charges, causing them to repel each other and separate.

3. Water molecules will attract each other electrically, but they will not attract oil molecules, causing separation.

4. Oil molecules will repel each other electrically, leading to complete mixing of the two substances.

1. Water and oil molecules have opposite electrical charges, causing them to repel each other and separate.

Explanation:

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

the increase of protons   hope this