Which of the following best describes an atom? tiny substance that cannot move but is locked in place to give all matter its shape a type of particle that makes up all matter and that can combine with other particle a negatively-charged body of matter that is responsible for electrical current which subatomic particle has the least mass? proton neutron electron elements are composed of atoms of at least two different types. true false the noble gases are an example of a of elements. period family table

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.