Adding or removing a single atom will turn a molecule into a molecule of a different substance. how is combining atoms to form a molecule like mixing ingredients for a recipe? pick the correct option.

a.
molecules have the same properties as their atoms, just like the finished recipe looks the same as its ingredients.

b.
the ingredients for a recipe must be combined in the right proportions, just like atoms combine to form molecules.

c.
atoms can be replaced without changing the molecule, just like ingredients in a recipe can be substituted.

d.
the ingredients for a recipe can be combined in any amount, just like atoms combine to form molecules.

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.

a is the correct answer