What You Need:
- Steel wool
- Take a digital thermometer and place it in a jar. Close the lid.
- Wait for about 5 minutes and note the temperature. Call this Temp 1.
- Remove the thermometer from the jar.
- Now soak a piece of steel wool in vinegar for 1 minute.
- Squeeze the vinegar out of the steel wool and wrap it around the bulb of the thermometer.
- Place the thermometer and steel wool into the jar and close the lid.
- Wait for 5 minutes and note the temperature. Call this Temp 2.
A chemical reaction is a process in which one substance is chemically converted to another. All chemical reactions involve the formation or destruction of bonds between atoms. Most chemical reactions give off heat. What Do You See? You will notice a change in the temperature in the jar. Temp 2 will be higher than Temp 1.he vinegar reacts with the protective coating on the steel wool. This allows the iron in the steel to rust. Rusting is a slow combination of iron with oxygen. When this happens, heat energy is released. The heat released by the rusting of the iron causes the mercury in the thermometer to expand and rise. This is the simplest chemical reaction to perform.