NEED HELP ASAP Since the atoms are generally neutral (in terms of charge) and the scientists knew that the electron was negativeLy charged, what was the conclusion they could logically come to? A. That there must be more negative particles in the atom
B. That there must be only neutral particles in the atom
C. That there must be a positive charge somewhere in the atom
D. That the electrons can change their charge

girl imma just put my comment here because i need a couple point okurrttt

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.