How might a theory relate to a model

In an exothermic reaction, energy may be released to the surroundings in the form of question 4 options: heat light thermal all of the above

Ok, so i have 2 questions. try to answer them both: (the topic is fire) 1) how can you represent the chemical reaction of fire? 2) what kind of bond is formed in this chemical reaction

Arrange the elements in order of increasing electronegativity. use the periodic table to you arrange the elements. p o k mg