[hartalinstalin69]

Please don´t hate me I´m a beginner(9th great)
Okay, so I have a simple and complex (maybe) question simultaneously.
How do I know that some chemicals will react?
You know I can learn all the reactions (that's what I currently do) but chemistry is science there should be some start like in math 2+2 then 2*2 and 2² all these are the same but to understand the last one (2²) you have to first understand 2+2 and I just donť see this in chemistry.Is there some simple rule like this?
Thanks for reactions

[Corribus]

There is no easy answer. A lot is intuition based on experience. Thermodynamics plays a large role in more systematically predicting whether a reaction will occur. But at the general (high school) chemistry level, where most reactions are fairly straightforward and involve binary compounds, a good place to start is the activity series. If you have not already, you will learn at some point to use it to predict whether reactions between X and Y proceed under certain conditions.

[Babcock_Hall]

In organic chemistry, we can look for one atom with a partial positive charge and another atom with a partial negative charge.  As Corribus said, there are no easy rules, but sometimes these two atoms will form a bond.