Tempered glass consists of a

• A. A single pane that has been treated by heating and cooling
• B. Two Panes Laminated
• C. A single Pane with Plastic Film
• D. Multiple Layers of Glass

Answer: (A)

Tempered glass is made by heating a single pane of glass and then cooling it rapidly in a controlled way. This heat-treatment creates strong surface compression, which makes the entire pane much tougher and more resistant to impacts and bending. If tempered glass does break, it shatters into small, dull granules rather than sharp shards, which reduces injury risk. Because it is defined by being a single pane that has undergone this heating-and-cooling process, it fits the description given. The other choices describe laminated or multi-layer assemblies (two panes with an interlayer, a single pane with a plastic film, or multiple glass layers), which are not what tempered glass is.