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kirill115 [55]
3 years ago
14

A scientist mixed two chemicals, observed the results, and concluded that an endothermic reaction took place. Which of the follo

wing would be evidence that the reaction was endothermic?
temperature decrease

temperature increase

change of state

change of color
Chemistry
1 answer:
Anni [7]3 years ago
8 0

Answer: Temperature increase

Explanation:

Endothermic reaction means the absorb of heat from the surrounding. So when heat is absorbed from the surrounding then the temperature of the reaction will increase

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<h3>Monoatomic vs Polyatomic Ions</h3>

In chemistry, monoatomic ions are ions that consist of only a single type of atom. They are usually positive or negatively charged and are otherwise known as simple ions. Examples include  Ca^{2+, O^{2-, and Fe^{3+

Polyatomic ions, on the other hand, are ions that consist of more than one atom, unlike monoatomic ions. The two or more atoms are covalently bonded and the entire structure behaves like a single chemical entity in reactions. Polyatomic ions are otherwise known as molecular ions.

Examples of polyatomic ions are  CH_3COO^-, NO_3^-, NH^+, CN^-, Li^+, and OH^-

Thus, from the diagram:

  • Polyatomic ions: CH_3COO^-, NO_3^-, NH^+, CN^-, Li^+, and OH^-
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More on ions can be found here: brainly.com/question/14982375

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