What science does these three scenes represent: 1. scientists put on heat-resistant suits then they jump into the mouth of an erupting volcano to explore earths interior. 2. Scientists work to stop a volcano from erupting. They succeed by filling its mouth with a large amount of heavy rocks. 3. The hero is walking along a ledge in a dimly lit cave. After a bad step, the hero falls into a dark pool that seems to have no bottom.

Idid a lab for chemistry where we put nails in a copper (ii) chloride solution. 1. why did the reaction stop? which reactant was used up? how do you know? 2. describe what was happening to the atoms of iron and copper during the reaction. what is this type of reaction called? 3. what would happen to the ratio of copper to iron if you had placed more nails in the beaker? if you had let the reaction go for less time? 4. what is the accepted ratio of copper atoms to iron atoms in this reaction? account for differences between your experimental value and the accepted value. write the balanced equation for the reaction.