Alfred is getting ready to eat a bowl of hot oatmeal. when he grabs the spoon to take a bite, it is very warm to touch. which method of heat transfer is responsible for heating the spoon?

Conduction

Explanation: Conduction is the form of heat transfer that occurs on solids. Since there is a difference in temperature between the bowl of hot oatmeal with a higher temperature heat flows to the spoon with lower temperature. The molecules of the spoon absorbs heat causing it to become hot. Heat always flow from hot to cold.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.

since electrons are negative the answer is neagtaive