Which of the following are examples of chemical weathering? (Mark all that apply.)315c3d7c6c3a376b9eb161b7ad883b1f.webm191 KB aRocks absorb water and it reacts with the molecules in the minerals. bMoving water breaks down rocks into smaller pieces as they are moved downstream. cWater gets in the cracks of a rock, freezes, expands, and cracks the rock further. dAcidic water dissolves certain rocks and minerals.
Question
Which of the following are examples of chemical weathering? (Mark all that apply.)315c3d7c6c3a376b9eb161b7ad883b1f.webm191 KB aRocks absorb water and it reacts with the molecules in the minerals. bMoving water breaks down rocks into smaller pieces as they are moved downstream. cWater gets in the cracks of a rock, freezes, expands, and cracks the rock further. dAcidic water dissolves certain rocks and minerals.
Solution
The examples of chemical weathering from the options provided are:
a) Rocks absorb water and it reacts with the molecules in the minerals. d) Acidic water dissolves certain rocks and minerals.
Explanation:
Chemical weathering involves the change in the composition of rocks and minerals due to the chemical reactions occurring between the minerals found in rocks and the environment.
Option a) is an example of hydrolysis, a type of chemical weathering where water reacts with the minerals in rocks and changes them into different minerals.
Option d) is an example of dissolution, another type of chemical weathering where acidic water (like rainwater mixed with carbon dioxide forming a weak carbonic acid) can dissolve certain types of rocks and minerals.
Options b) and c) are examples of physical (or mechanical) weathering, not chemical. In b), the moving water physically breaks down the rocks, and in c), the freeze-thaw cycle causes the rock to crack and break apart.
Similar Questions
Which of the examples below is an example of weathering?76f9f43cdf881ac72c528759c97f9ba2.webm154 KB aUsing a hammer to break open a geode. bIce melting and water freezing in the crack of a rock causing it to break. cWind blowing leaves across rocks. dA pebble rolling down a grass covered slope.
Which of the following describes the chemical weathering of rocks
Which of the following is an example of mechanical weathering? athe change of minerals to a carbonate when exposed to water bthe formation of rust when oxygen contacts iron-bearing minerals cthe cracking of a rock as plant roots grow dall of the above
Which is an example of weathering by water?Choose 1 answer:Choose 1 answer:(Choice A) Rainwater dislodges soil particles from the ground.ARainwater dislodges soil particles from the ground.(Choice B) A river transports sediment downstream.BA river transports sediment downstream.(Choice C) Ocean waves drop sand onto a beach.COcean waves drop sand onto a beach.
True or False: Chemical weathering involves a change in the composition of the rock.TrueFalse
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