Reactivity is a chemistry term that describes how easily a substance can conduct a chemical reaction. The substance can react individually or with other atoms or compounds, and the reaction is usually accompanied by the release of energy. 

The most reactive elements and compounds have the potential to spontaneously ignite or explode. They usually burn in water and in the presence of oxygen in the air. The temperature has an impact on reactivity. Temperature raises the amount of energy available for a chemical reaction, thus making it more likely to react.

Chemical reactivity

In chemistry, a material’s reactivity measures how quickly it triggers a chemical reaction. The substance may participate in the reaction alone or in conjunction with other atoms or compounds and an energy release generally follows it.

• The term reactivity can also refer to how rapidly a material reacts or the rate at which a chemical reaction occurs.
• The most reactive elements and compounds can spontaneously or explosively ignite. 
• They usually burn in the presence of both water and oxygen in the air.
• The temperature affects reactivity. Increasing the temperature provides more energy for a chemical reaction, which improves its chance of reacting.
• The physical properties of a sample, its chemical purity, and the presence of other compounds all influence its reactivity.
• Baking soda and water are not particularly reactive; 
• Baking soda and vinegar combine to form carbon dioxide gas and sodium acetate.
• The structure of the periodic table allows for reactivity predictions. Both extremely electropositive and electronegative materials are highly reactive.
• These elements may be found in the periodic table’s upper right and bottom left corners.

• The size of the particles has an impact on their reactivity. A pile of corn starch, for example, is relatively inert. It’s tough to start a combustion process with a direct flame on the starch. In contrast, corn starch rapidly ignites when evaporated into a cloud of particles. 

Concepts of chemical reactions

• Chemical reactions solely affect the locations of electrons while forming and breaking chemical bonds between atoms, without any change to the nuclei, and may be represented using a chemical equation.
• New substances are produced during a chemical reaction. Here the chemical bonds break, and the atoms that make up the substances split and reorganise themselves into new compounds with new chemical bonds. This is referred to as a chemical reaction. 
• Atoms are never formed or destroyed during chemical processes. The same atoms that exist in the reactants are also found in the products; they are simply rearranged in different sequences.

Parts of chemical reactions

1. The components that interact in a chemical reaction are known as reactants.
2.  Products are the compounds generated as a result of the reaction.
3.  Chemists use a symbolic description known as a chemical equation to express the reactants and products. 3
4. The reactants are listed on the left side, the products are listed on the right side.
5.  The reactants and products are separated by an arrow showing the direction of the reaction.
6. While many chemical equations portray reactants yielding products, the chemical reaction usually occurs in the other direction.
7.  In a chemical reaction or a chemical equation, no new atoms are formed or lost (mass conservation), but chemical bonds between individual atoms can be broken and  then be further established.

Balanced and unbalanced 

Chemical equations can be either unbalanced or balanced. Although an unbalanced chemical equation does not account for mass conservation

It is typically a good starting point since it specifies the products and reactants and the direction of the chemical reaction.

Conclusion

During a chemical process, new compounds are created. The chemical bonds of the substances are broken, and the atoms that comprise the substances divide and rearrange themselves into new substances with new chemical bonds. When this happens, it is referred to as a chemical reaction. A chemical reaction is a process that converts one or more compounds into new compounds.