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hjlf
3 years ago
9

A substance changes from a solid to a liquid at its _____.

Physics
2 answers:
Kamila [148]3 years ago
8 0

Answer: Option (D) is the correct answer.

Explanation:

When we heat a solid substance then at a certain temperature point it starts to convert or melt into liquid state. This point of change is known as melting point.

For example, when ice melts at room temperature then it means ice is melting at 25 degree celsius.

When liquid state of a substance changes into vapor state upon heating. Then the point at which this change occurs is known as boiling point.

Also, more is the mass of a solid substance per unit volume highest will be its density. And, less is the mass of a solid substance per unit volume lowest will be its density.

Thus, we can conclude that a substance changes from a solid to a liquid at its melting point.

MrRa [10]3 years ago
7 0
I would say D) melting point.
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Question 6
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Limestone and dolomite are the rocks present in the locations which leads to the formation of caves.

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The type of rocks that once existed in these  locations are limestone and dolomite whereas the pH of the nearby groundwater is slightly acidic which is responsible for the formation of caves. Caves are formed by the dissolution of limestone due to acid rain.

<h3>Acid rain</h3>

Rainwater reacts with carbon dioxide from the air and percolates through the soil, which turns into a weak acid. This slowly dissolves out the limestone which become turn to form caves so we can conclude that Limestone and dolomite are the rocks present in the locations which leads to the formation of caves.

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Have a nice day!          

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it will be 1/√2 of its original period.

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