Pls me i need this answer are easier to work with than reality and can be manipulated. computers observations experiments models
it is not observations

Models

Explanation:

Models are abstractions of the real world. Models helps to mimick what is actually the true representation of a body. It is easier to work with models because they are our own creation. This makes them flexible to carryout any form of adjustments and manipulations. We can try out a model with different variables to simulate an obtainable result.

Models are easier to work with than the complex reality with a lot of factors and conditions that may not be easily predictable and under control.

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

a polar bond is formed when electrons are shared unevenly between atoms