GEOLOGY
PHYSICAL GEOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a rock that has been changed into one or more chemical compounds
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a rock that has been mechanically broken into tiny pieces
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a rock that has been split in two
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a rock that has lost its outer layers
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Detailed explanation-1: -Chemical weathering occurs when water dissolves minerals in a rock, producing new compounds. This reaction is called hydrolysis.
Detailed explanation-2: -Sometimes, chemical weathering dissolves large portions of limestone or other rock on the surface of the Earth to form a landscape called karst. In these areas, the surface rock is pockmarked with holes, sinkholes, and caves.
Detailed explanation-3: -Chemical weathering is indicated by the chemical transformation of rocks into one or more new compounds. These new compounds are generally softer, consist of smaller pieces (therefore more surface area), and are more soluble than the original rock.
Detailed explanation-4: -Chemical weathering is the other important type of weathering. Chemical weathering may change the size of pieces of rock materials, but definitely changes the composition. So one type of mineral changes into a different mineral. Chemical weathering works through chemical reactions that cause changes in the minerals.
Detailed explanation-5: -; chemical weathering of rock minerals generally occurs more quickly in hot, humid climatic regions. Oxidation is the reaction of rock minerals with oxygen, thus changing the mineral composition of the rock.