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Bogdan [553]
3 years ago
14

What do you mean by chemical reaction ?​

Chemistry
1 answer:
kherson [118]3 years ago
6 0

A chemical reaction is a reaction that changes the molecular structure and is normally irreversible.

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3) The spectrum of the unknown mixture is a mixture of two substances among the five. What are these two substances
Neporo4naja [7]

Answer:

a. H + d. Na

Explanation:

This is Mixture of H and Na. Because of H and in the emission and Absorption spectrum of H Total 5 lines [Red, Green, Blue and Purple (2)) are present and in the spectrum of Na Two yellow lines are present. In the mixture all this lines are are also 5 + Present. Total lines are 5+2= 7 (H+ Na)

Therefore, the answer is a. H + d. Na

3 0
3 years ago
Water is a covalent compound and doesn’t conduct electricity. With this in
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the water wants to give the electricity to you because it doesn't want any more electrons it throws them away and gives them to your body
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3 years ago
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¿Cómo se llama el grupo IIA de la tabla periódica?
Verdich [7]

Answer:

los metales alcalinotérreos: berilio (Be), magnesio (Mg), calcio (Ca), estroncio (Sr), bario (Ba) y radio (Ra).

o simplemente llamado grupo 2A

Explanation:

8 0
2 years ago
What is plasma in chemistry​
faltersainse [42]

Explanation:

Plasma is an ionized gas, a distinct fourth state of matter. “Ionized” means that at least one electron is not bound to an atom or molecule, converting the atoms or molecules into positively charged ions.but plasma is present in human body too in a liquid form.

hope this helps you

have a nice day

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