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3 years ago

How to identify a chemical reaction

Chemistry

2 answers:

Kamila [148]3 years ago

6 0

Explanation:

We can tell if a chemical reaction has taken place when one or more of the following things happen:

1.There has been a colour change inside the reaction flask.

2. A gas has formed. Usually we know a gas has formed when we can see bubbles.

3.A solid has formed.

hope this answer helps!!!

sladkih [1.3K]3 years ago

3 0

Explanation:

A Chemical Reaction Is Usally Accompaneid by easly observed physical effects such as the emissions of heat and light the information of a precipitate the evaluation of gas,or a color change

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What are isoelectronic and isostructural species?

alexgriva [62]

Isoelectronic species are ions or elements that have equal number of electrons. From the root word, electron of the word isoelectronic. On the other hand, isotructural species are compounds with the same structures.Hope this answers the question.

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4 years ago

Hi can you slove this please. ..

Crank

Answer : The balanced chemical equation will be:

(i) $2K+H_2SO_4\rightarrow K_2SO_4+H_2$

(ii) $Mg(OH)_2+Zn\rightarrow Zn(OH)_2+Mg$

Explanation :

Balanced chemical equation : It is defined as the equation in which total number of individual atoms on the reactant side is equal to the total number of individual atoms on product side.

Part (i):

The balanced chemical equation will be:

$2K+H_2SO_4\rightarrow K_2SO_4+H_2$

This reaction is a single displacement reaction in which most reactive element (potassium) displaces the least reactive element (hydrogen) form their solution.

Part (ii):

The balanced chemical equation will be:

$Mg(OH)_2+Zn\rightarrow Zn(OH)_2+Mg$

This reaction is a single displacement reaction in which most reactive element (zinc) displaces the least reactive element (magnesium) form their solution.

7 0

4 years ago

The term for free electrons in metals transferring energy by colliding with other atoms or electrons is _____.

shepuryov [24]

Conduction

In metals, the electrons of each atom are delocalized, which means they are free to move about in the structure of the metal. When heat is applied at one end of the metal, the electrons there are excited and collide with surrounding particles, transferring their energy to them. This is what makes metals very good conductors of both heat and electricity.

4 0

3 years ago

Read 2 more answers

Which chemical equation is a model of a decomposition reaction?

blagie [28]

A is a model of a decomposition reaction

3 0

3 years ago

Anyone tryna help mee

devlian [24]

Answer:

It is a solid

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3 years ago