it expands when it freezes
it dissolves solutes
Answer: Option (a) is the correct answer.
Explanation:
A water molecule contains two hydrogen atoms and one oxygen atom. The chemical formula of water is .
Here, hydrogen is electropositive whereas oxygen atom is electronegative in nature. Hence, oxygen atom pulls electrons from hydrogen atom and as a result partial positive charge develops on hydrogen and partial negative charge develops on oxygen atom.
Therefore, molecule of water becomes polar in nature.
Thus, water is considered a polar molecule because it has partial positive and negative charges at each end.
Answer:
The answer is It has partial positive and negative charges at each end.
Explanation:
When a neutral molecule has a positive area at one end and a negative area at the other, it is a polar molecule. Water is a polar molecule, because there is an irregular distribution of electron density in it. This means that water has a negative partial charge near the oxygen atom and a positive partial charge near hydrogen atoms.
Answer: d. all of the above
The soil microbes and insects plays an important role in maintaining the fertility of the soil. Also, the soil is the habitat of large diversity of these insects and microbes. The fungi, bacteria and insects- nematodes decomposes the plant litter in the form of leaves, twigs and other organic matter available in the soil and helps in preparation of humus in the soil. Humus is a dark colored, sticky substance which is rich in organic matter and supports the growth of the plants. The healthier the soil, the more plants will grow and more litter will produce which otherwise favor the soil ecosystem.
Sandstone, shale, conglomerate, and breccia are examples of clastic sedimentary rocks. They form when rock fragments, or clasts, are eroded, transported, and deposited in layers. Over time, they become compacted and cemented together to form sedimentary rocks.
Four examples of clastic sedimentary rocks include sandstone, shale, conglomerate, and breccia. These rocks form through a process called lithification. Initially, weathering breaks down pre-existing rocks into small fragments or particles. These particles, known as clasts, are then transported by natural forces like wind, water, or ice in a process known as erosion. Over time, these clasts build up in layers and eventually get compacted and cemented together to form sedimentary rocks.
Sandstone, for example, forms from sand-sized clasts, often in desert dunes or riverbeds. Shale is made of clay or mud-sized particles and often forms in calm water environments like lakes or deep sea beds. Conglomerates consist of large, rounded clasts and often form in fast-moving rivers. Breccia, on the other hand, is formed from large, angular clasts and usually forms near mountainous regions where there is a high rate of mechanical weathering.
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