Match the chemical reactions. 1. molecules rearrange and form new molecules decomposition 2. simultaneous decomposition and synthesis exchange 3. bonds broken and elements released synthesis 4. molecules formed from components reversible

Respuesta :

exchange molecules rearrange and form new molecules
reversible simultaneous decomposition and synthesis
decomposition bonds broken and elements released
synthesis molecules formed from components

The correct matches are as follows:

1. EXCHANGE: Molecules rearrange and form new molecules.

Exchange reaction is a type of reaction in which cations and anions, which are present in reactants are interchanged in the products. The general form for exchange reaction is: AB + CD = AD + CB. Exchange reactions are generally grouped into three classes, which are: neutralization, precipitations and gas forming.

2. REVERSIBLE: Simultaneous decomposition and synthesis.

A reversible reaction is a type of chemical reaction in which reactants react together to form products and the products in return can also react together to form reactants; thus, there is simultaneous formation and decomposition. The general form of reversible reaction is: A + B ⇆ C + D.

3. DECOMPOSITION: Bonds broken and elements released.

A decomposition reaction is a type of chemical reaction in which a single substance breaks down into two or more elements or new substances. This type of reaction needs energy source that will be used to break the bonds that exist in the original compound. The energy can be in form of heat, electricity or light. The general form for decomposition reaction is: AB = A + B.

4. SYNTHESIS: Molecules formed from components.

Synthesis reaction is a type of chemical reaction in which two or more substances react together to form a more complex substance. The reactants may be elements or compounds but the product is always a compound. The general format of synthesis reaction is: A + B = AB.