I need help with this question

3rd one

Explanation:

Lower density floats. Highest, sinks.

The answer is C

Explanation:

The higher the density, the lower compared to other liquids it will sit in a container. Therefore, because liquid A has the highest density, it will be on the bottom, and Liquid B has the lowest density, it will sit on top, leaving Liquid C in the middle. The correct answer is C- Liquid A on bottom, C in the middle, and B on the top.

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 correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.