Which of the following is not an example of a chemical change? 1. melting snow 2- tarnished spoon 3. forming a precipitate 4. respiration

1) Melting snow

A chemical change occurs when the chemical composition of a substance is changed. A physical change affects the physical properties of the substance, such as a change in the state of matter or changing the shape or size of the substance. Since melting snow is simply a change from the solid state to liquid state, it is a physical change, not a chemical change. 

In 2081, everyone is equal not only in the eyes of the law but in every way; nobody is smarter, more athletic, better looking, etc. than anyone else. hazel is of average intelligence, which means she can't think about anything except in short bursts, and george has an intelligence way above normal.