in a certain chemical reaction, two reactants undergo change to form two products why cant you determine what type of reaction occurred from this information

I don't know what the reactants are. That's why. There are many "types" of reactions in which two reactants produce two products.

To determine the type of reaction that occurred in a chemical reaction, we need more information. However, based on the fact that two reactants undergo change to form two products, there are several possibilities to consider:

1. Combination or Synthesis Reaction: This occurs when two or more substances combine to form a single product. In this case, the two reactants would have combined to form one product.

2. Decomposition Reaction: This happens when a single reactant breaks down into two or more products. In this case, the single reactant would have decomposed into two products.

3. Exchange or Displacement Reaction: This involves the exchange of atoms or groups between reactants to form new products. In this case, one or more atoms or groups from each reactant would have exchanged to form the two products.

4. Redox or Oxidation-Reduction Reaction: This type of reaction involves the transfer of electrons between reactants, resulting in the formation of two products. If this reaction occurred, there would be evidence of a change in oxidation states of the elements involved.

Without further information, it is not possible to definitively determine the type of reaction that occurred. Additional details such as the specific reactants involved, their states (solid, liquid, or gas), any catalysts or temperature conditions, or a balanced chemical equation are needed to identify the reaction type accurately.