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.
Corn seeds are most likely to germinate when they are planted at a depth of approximately 1 to 2 inches. Inserting your soil thermometer into the soil at the depth you plan to plant provides an accurate measurement of how warm the soil is at that depth.