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Licemer1 [7]
3 years ago
7

A chemical reaction in which two or more substances undergo a chemical union to form a more complex substance is a _______ react

ion.
A. double replacement
B. substitution
C. decomposition
D. combination
Chemistry
2 answers:
Reptile [31]3 years ago
8 0

Answer : The correct option is, (D) Combination

Explanation :

  • Double replacement reaction : A chemical reaction in which a positive cation and a negative anion of the two reactants exchange places to give two new products or compounds.

        The general representation of this reaction is,

         AB+CD\rightarrow AD+CB

         (A and C are the cations, B and D are the anions)

  • Substitution reaction : A chemical reaction in which a more reactive element displaces the least reactive element.

        The general representation of this reaction is,

         A+BC\rightarrow A+CB

  • Decomposition reaction : A chemical reaction in which a bigger compound breaks into two or more smaller compounds or elements.

        The general representation of this reaction is,

         AB\rightarrow A+B

  • Combination reaction : A chemical reaction in which two or more substances react to form a more complex substance.

        The general representation of this reaction is,

         A+B\rightarrow AB

Hence, the correct option is, (D) Combination

Lorico [155]3 years ago
3 0

Answer:d. Combination

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