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Masja [62]
2 years ago
6

Heating of glass until it melts what change is it

Chemistry
2 answers:
Natasha2012 [34]2 years ago
4 0

Answer:

physcial change

Explanation:

As it has visible changes on shape and size

Vedmedyk [2.9K]2 years ago
4 0
Physical change it’s still a glass
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The temperature in a town started out at 55 degrees. By the end of the day the temperature dropped to -6 degrees.
garik1379 [7]

Answer:

The choice of the answer is fourth option that is -61 degrees.

Therefore the temperature drop is -61°Centigrade.

Explanation:

Given:

The temperature in a town started out at 55 degrees

Start temperature = 55°Centigrade. (Initial temperature)

End of the Day      = -6°Centigrade. (Final temperature)

To Find:

How far did the temperature drop?

Solution:

We will have,

\textrm{Temperature drop}=\textrm{Final temperature}-\textrm{Initial temperature}

Substituting the above values in it we get

\textrm{Temperature drop}=-6-55\\\\\therefore \textrm{Temperature drop}=-61\° centigrade

Therefore the temperature drop is -61°Centigrade.

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3 years ago
Susanna was hiking in the mountains, and she discovered an interesting, shiny rock. She wondered if this sample was actually a r
Zigmanuir [339]

Answer:

Yes it is a mineral

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Susanna has found a mineral because the five characteristics of a mineral are naturally occurring solid, crystal structure, forms by inorganic process, and definite chemical composition. Everything that was listed in the question describes the fact that its a mineral.

Brainliest would be appreciated :)

7 0
3 years ago
In terms of energy what kind of system is a sealed glass terrarium on a windsill?
Snezhnost [94]
If the sealed glass is permeable to sunlight or to transfer of heat will be an open system, but if the sealed glass is a thermic glass and doesn't allow exchange of heat and exchange of solar energy (for example a mirrored glass that reflect the sunlight) and the terrarium is not exchanging energy with the surroundings will be a closed system. It is a question that doesn't specify too many details about the system in the study. It is hard to give a final answer without making some assumptions.
6 0
3 years ago
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Why is scientific notation useful?
BlackZzzverrR [31]
It condenses very long strings of numbers while retaining the general accuracy of the figure.
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Which of the following is NOT a benefit of<br> using renewable energy sources?
Afina-wow [57]

Answer:

D, They produce fossil fuels

Explanation:

you can't just pull them out of nowhere

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3 years ago
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