Freebase(0.00 / 0 votes)Rate this definition: Chemical property. A chemical property is any of a material's properties that becomes evident during a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.
Ground Temperature. The best time to plant your corn seeds is when the soil temperature reaches an average of 50 degrees Fahrenheit. You can determine the average ground temperature in your garden using a soil thermometer -- available at most garden stores.
With that in mind, to minimize risk, begin planting when soils are 50 F or greater or are near 50 F and rising quickly after mid-April. Problems associated with corn in cold soils. Cool soil temperatures early in the season increase variability in final stands.