During an experiment vinegar was added to baking soda. the following observations were recorded. observation 1: the container with the reaction mixture feels cooler. observation 2: gas bubbles are released. based on the observation, justify the type of change (physical or chemical) that took place.

Chemical change.

Explanation:

When vinegar (CH₃COOH) is added to baking sods (NaHCO₃) there is a chemical reaction involved which is neutralization. This reaction produces carbon dioxide which is observed as gas release of gas bubbles.

Simultaneously there is making and breaking of bonds and the energy needed to break the bond is greater than the energy released in making the bond thus the reaction is endothermic which overall decreases the temperature of container. Thus the feel of cooling is also a chemical change.

chemical energy is stored in the chemical bonds of atoms and molecules. it can only be seen when it is released in a chemical reaction. when chemical energy is released, the substance from which the energy came is often changed into an entirely different substance.

this chemical reaction releases energy in the form of light and heat. chemical energy is the potential energy stored in the arrangement of atoms within molecules. breaking chemical bonds requires energy, while forming new chemical bonds releases energy.

the atp molecule can store energy in the form of a high energy phosphate bond joining the terminal phosphate group to the rest of the molecule. in this form,energy can be stored at one location, then moved from one part of the cell to another, where it can be released to drive other biochemical reactions.

the answer is true.