Tijuan mixed a solid and a liquid together in a beaker. He determined that a chemical change occurred. If his conclusion is correct, which substances could he have been observing and why? A) ice mixed into warm oil, because the change of state that occurred when the ice melted cannot be reversed. B) baking soda mixed into vinegar, because the production of bubbles indicates that a new substance formed. C) sugar mixed into hot water, because the disappearance of solid indicates that the chemical identity of the sugar changed. D) sand mixed into water, because when sand was added the mass of the beaker increased.

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.

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explanation:

the answer is 0.42 is that is an option. this question provides no info