A chemical bond between two atoms is:

Explanation

To answer the question "A chemical bond between two atoms is:", we can follow these steps:

### Step-by-Step Solution:

1. **Definition of a Chemical Bond**:
A chemical bond is defined as the force that holds two atoms together in a molecule or compound. It is the attraction between atoms that allows them to form stable structures.

2. **Nature of the Bond**:
The bond can be formed through the sharing or transfer of electrons between the atoms. This interaction can involve different types of bonds, such as ionic bonds (where electrons are transferred) and covalent bonds (where electrons are shared).

3. **Types of Atoms Involved**:
The atoms involved in a chemical bond can be either nonmetals, metals, or a combination of both. Additionally, ions (charged atoms) can also participate in bonding.

4. **Electron Pairing**:
In many cases, particularly in covalent bonding, the electrons are shared in pairs. This sharing of electron pairs is what leads to the formation of a stable bond between the atoms.

5. **Conclusion**:
Therefore, a chemical bond between two atoms can be described as a "chemical link" that involves the sharing or transfer of electron pairs between them.

### Final Answer:
A chemical bond between two atoms is a **chemical link between two atoms or ions in which the electron pairs are shared or transferred.**

---