Get Science Grade 06 Unit 08 Exemplar Lesson 03: Space Exploration

Glass will not burn in the air, and it is a non-combustible substance.

Answer: Combustible substances: Those substances which undergo combustion or burn are called combustible substances. For example: Paper, cloth, cooking gas (LPG), CNG, Kerosene oil, wood, charcoal, etc. Non-Combustible substances: Those substances which do not undergo combustion are called combustible substances.

Glass will not burn in the air, and it is a non-combustible substance.

In glass the elements are in their higher oxidation states. As a result, they do not react with oxygen and thus glass does not catch fire. So, it is not combustible.

Answer: Combustible substances: Those substances which undergo combustion or burn are called combustible substances. For example: Paper, cloth, cooking gas (LPG), CNG, Kerosene oil, wood, charcoal, etc. Non-Combustible substances: Those substances which do not undergo combustion are called combustible substances.

Glass consists mostly of oxides such as silica. Because the elements are in their highest oxidation states, they will not react with oxygen. Thus, glass is not combustible.

In glass the elements are in their higher oxidation states. As a result, they do not react with oxygen and thus glass does not catch fire. So, it is not combustible.

Irrigation improves soil texture. This statement is incorrect. As soil textures can be improved by providing the soil with humus and plowing, not only by irrigation.

Glass consists mostly of oxides such as silica. Because the elements are in their highest oxidation states, they will not react with oxygen. Thus, glass is not combustible.

Texture is important because it influences: the amount of water the soil can hold. the rate of water movement through the soil. how workable and fertile the soil is.

Irrigation improves soil texture. This statement is incorrect. As soil textures can be improved by providing the soil with humus and plowing, not only by irrigation.

(iv) Irrigation improves soil texture.

Texture is important because it influences: the amount of water the soil can hold. the rate of water movement through the soil. how workable and fertile the soil is.

The texture of a soil is important because it determines soil characteristics that affect plant growth. Three of these characteristics are water-holding capacity, permeability, and soil workability.

(iv) Irrigation improves soil texture.

The texture of a soil is important because it determines soil characteristics that affect plant growth. Three of these characteristics are water-holding capacity, permeability, and soil workability.

Soil fertility can be further improved by incorporating cover crops that add organic matter to the soil, which leads to improved soil structure and promotes a healthy, fertile soil; by using green manure or growing legumes to fix nitrogen from the air through the process of biological nitrogen fixation; by micro-dose ...

Soil fertility can be further improved by incorporating cover crops that add organic matter to the soil, which leads to improved soil structure and promotes a healthy, fertile soil; by using green manure or growing legumes to fix nitrogen from the air through the process of biological nitrogen fixation; by micro-dose ...

Soil fertility can be further improved by incorporating cover crops that add organic matter to the soil, which leads to improved soil structure and promotes a healthy, fertile soil; by using green manure or growing legumes to fix nitrogen from the air through the process of biological nitrogen fixation; by micro-dose ...