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DENIUS [597]
3 years ago
8

a substance may change from one form to another with change in temperature. these are _______ changes

Chemistry
1 answer:
RoseWind [281]3 years ago
6 0

Answer:

Physical changes

As we know,

Physical changes are those changes which can be reversed and is not permanent. It does not change the chemical nature of the substance....A great example of physical change is given in the question itself, When a substance is melted it can be frozen or cooled back to it's original form, When an object is frozen it can be melted back to its Liquid form, and when an object is in gaseous form like water vapour it can be cooled, and brought back to liquid form....

Happy to help

Pls Mark As Brainliest.

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vivado [14]

Answer:

1- waxing gibbous

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4- full moon

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6- new moon

7- first quarter

8- waning gibbous

Explanation:

hope that helps

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3 years ago
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What is the mass, in grams, of one mole of any substance known as?
Elena-2011 [213]

Answer: molar mass

Explanation:

The molar mass of any substance is it's relative molecular mass expressed in grams. Hence, the relationship between molar mass of any substance and mass, in grams, of one mole of any substance is mathematically expressed as:

Number of moles =

(Mass in grams ➗ Molar mass)

Hence, the unit of molar mass is gram per mole (g/mol)

Thus, molar mass is the answer.

3 0
3 years ago
Which statement best describes the liquid state of matter?
Andrei [34K]

Answer:

There are no acceptable descriptions at all on that list of choices.

5 0
3 years ago
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3. Dorji was provided with four colourless solutions. He was asked to
givi [52]

Answer:

First, we can test Solution 1. We know that Sodium Hydroxide is a strong base. If we test acids on blue litmus paper, they will turn red. If we test bases on red litmus paper, they will turn blue.  So, you can test all the of the solutions- water, sodium hydroxide and hydrochloric acid with blue and red litmus paper. HCl, Hydrochloric acid is an acid, so it will turn blue litmus paper red. It will not turn red litmus blue. The acids will turn blue litmus paper red. The bases will turn red litmus paper blue. Only water is a neutral liquid, which will not turn blue litmus paper red or red litmus paper blue. It will not change the colour of it. Thus, if you test all the solutions with blue and red litmus paper, you will know which solution is water.  Water is the only one which is neutral. It is the only solution which cannot change the colour of any litmus paper. Thus, you can identify it very easily.  

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3 years ago
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PolarNik [594]

Answer:

1.Magnetosphere

2.Liquid Outer core

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Explanation:

The invisible field that protect us from solar radiation is called Magnetosphere.

This protective field is created by movement between solid inner core and earth's Liquid outer core.

The layer of gases is called atmosphere.

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Look for the latitude first ,horizontal line ...

8 0
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