Question

если хорошо прокалить почву на огне как изменится цвет почвы?при прокаливании какие вещества сгорают а какие остаются?они придают почве какой цвет

Answer 1

Почва станет светлее, так как перегорает гумус.

Answer 2

Effects of Heating Soil on Color

When soil is heated on fire, it can undergo changes in color. The specific color change will depend on various factors, including the composition of the soil and the temperature and duration of heating. In general, heating soil on fire can cause it to change color due to the alteration or decomposition of organic matter and minerals present in the soil.

Substances Burned and Remaining in the Soil

During the process of heating soil on fire, certain substances may burn or decompose, while others may remain in the soil. The exact substances that burn or remain will depend on the composition of the soil. Organic matter, such as plant and animal residues, can undergo combustion and release gases, leaving behind ash or charred remains. Minerals present in the soil may also undergo changes, such as oxidation or reduction, which can affect their color.

Impact on Soil Color

The substances that remain in the soil after heating can contribute to its color. For example, the presence of charred organic matter or ash can darken the soil, giving it a black or dark brown color. The alteration of minerals during heating can also affect the soil color. Some minerals may undergo changes in oxidation state, leading to color variations. For instance, iron minerals can change from yellow or brown to red or black when heated.

It is important to note that the specific color changes resulting from heating soil on fire can vary depending on the initial composition of the soil, the temperature and duration of heating, and other factors. Therefore, it is difficult to provide a definitive answer regarding the exact color change that will occur in all cases.

In conclusion, heating soil on fire can cause changes in its color due to the decomposition of organic matter and alterations in mineral composition. The specific color change will depend on various factors and can range from darkening of the soil due to the presence of charred organic matter or ash to variations in mineral colors resulting from changes in oxidation state.