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Gnom [1K]
3 years ago
13

A temperature change in a reaction indicates_____.

Chemistry
2 answers:
natita [175]3 years ago
8 0

A temperature change in a reaction indicates a chemical change

Alenkinab [10]3 years ago
4 0
<h2>Answer:</h2>

A temperature change in a reaction indicates <u>occurrence of chemical change</u>.

<h2>Explanation:</h2>

In chemistry, two types of reaction are always witnessed. One is physical reaction whereas the other is chemical reaction. In a chemical reaction, there is an adjustment in the organization of the substances whereas in a physical change there is a distinction in the appearance, smell, or straightforward showcase of an example of issue without an adjustment in structure.

At the point when bonds are broken and new ones are shaped, a compound change happens. The following happenings indicate the chemical change:

  • Change in Temperature  
  • Change in Color  
  • Recognizable Odor  
  • Development of a Precipitate or bubbles
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Which of the following is true about matter
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8 0
3 years ago
Rank the following substances in order from most soluble in water to least soluble in water: methane, CH4; 2-butanol, C4H9OH; ma
Taya2010 [7]

Answer: The given substances are placed in order from most soluble in water to least soluble in water as follows.

         MgCl_{2} > C_{4}H_{9}OH > C_{3}H_{8} > CH_{4}

Explanation:

It is known that like dissolves like which means a polar compound will be soluble in a polar solvent. And, a non-polar compound will be soluble in non-polar solvent.

Ionic compounds are soluble in polar solvent like water. For example, MgCl_{2} is an ionic compound and it is readily soluble in water.

2-butanol (C_{4}H_{9}OH) is also a polar compound and it will also dissolve in water but to a lesser extent as compared to magnesium chloride.

Whereas both methane and propane are non-polar in nature. But as propane is larger in size as compared to methane so, it will be slightly more soluble in water as compared to methane.

Thus, we can conclude that the given substances are placed in order from most soluble in water to least soluble in water as follows.

     MgCl_{2} > C_{4}H_{9}OH > C_{3}H_{8} > CH_{4}

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