A) Many first aid kits include an instant could pack. A cold pack utilizes a chemical reaction that has a significant change in energy in order to make the pack feel cold. EXPLAIN which type of reaction an endothermic reaction or an exothermic reaction, would be most useful for making a cold pack.
B) HCl is a strong acid, and NaOH is a strong base. Neither substance should be poured down the drain because they are corrosive. Considering the chemical equation for the reaction between these two substances, why do you think it is okay to pour the contents of the reaction mixture down the sink?
C) Discuss whether aspirin in the form of a tablet or a powder would be more efficient at quickly relieving a headache. Support Answers, if possible, using experimental evidence.