3. tuo lab partners follow the instructions during their chemistry investigation very carefully. they
measure 200 ml. of a clear liquid into a beaker, then, they measure 50 ml of a different clear liquid into a
graduated cylinder. thay pour the liquid from the graduated cylinder into the beaker. the image below
shows the results.
what should the partners conclude about the two liquids?
both liquids cooled when they were mixed.
b filtering would make it possible to soparate the liquids.
c. a chemical reaction occurred when the liquids wore mixed.
d. a new substance with the same properties as the original liquidsfonted.
2015 20
grade uw chemical changes and conservation of lines asement

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.

answer carbon and three oxygen atoms;