When two amino acid monomers are positioned so that the carboxyl group of one is adjacent to the amino group of the other, they can be joined through a reaction. This reaction forms a(n) bond.

A peptide

Explanation:

A peptide bond is a type of amide covalent chemical bond which links two successive alpha amino acids, it is also known as Eupeptide bond it is formed when the chemical bond that exists between two molecules in which the carboxyl molecule acts with the amino group on the other molecule which leads to the liberation of water.

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.

plasma - state of matter made up of electrically charged particles