Let's look at a few assessment scenarios. Try to determine what type of assessment is being used, formal or informal. 1  Example 1. 2  A kindergarten teacher sets aside the first 15 minutes of every day to allow students to explore, play or engage in any activity of their choice.
Chemical bonds are made or broken in order to create a new molecule. One example of a chemical reaction is the rusting of a steel garbage can. That rusting happens because the iron (Fe) in the metal combines with oxygen (O2) in the atmosphere. Chemical bonds are created and destroyed to finally make iron oxide (Fe2O3).
Synthesis Reaction. The word 'synthesis' means to put together. In a synthesis reaction two substances combine to produce a single product. The general chemical equation for a synthesis reaction is A + B AB. The reaction of a metal with a non-metal to produce a compound is an example of a synthesis reaction.