Cleavage isthe way the light reflects along the surfaceThe mineral breaks along a flat surfaceThe mineral breaks along uneven surfacesthe powered form of a mineral

It seems like you're asking for definitions of several terms related to minerals. Here they are:

1. Cleavage: This is a term used in mineralogy to describe the way that certain minerals break along specific planes. These breaks occur along the weakest points in the mineral's atomic structure.

2. Light reflection on the surface: This is not a term, but it refers to how light interacts with the surface of a mineral. This can affect the color and luster of the mineral.

3. Mineral breaking along a flat surface: This is another way to describe cleavage. When a mineral has perfect cleavage, it will break along smooth, flat surfaces.

4. Mineral breaking along uneven surfaces: This is referred to as fracture. Unlike cleavage, which occurs along planes of weakness in the mineral's structure, fracture occurs when a mineral breaks in a way that is not related to its internal structure.

5. Powdered form of a mineral: This is referred to as the mineral's streak. The streak of a mineral is the color of its powder when it is rubbed on an unglazed porcelain plate. This can be different from the color of the mineral in its solid form.