Chemistry, 25.08.2019 11:00 stackpoolekrysp71si4

According to the law of conservation , the number of atoms in the products of a chemical reaction must be balanced with the number of atoms in the reactants.

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Answer from: jaylahlove77

The answer is: mass.

For example, balanced chemical reaction:

2CH₃OH + 3O₂ → 2CO₂ + 4H₂O.

Number of atoms must be the same on left and right side of balanced chemical reaction according to the law of conservation of mass or principle of mass conservation.

There are eight hydrogen atoms, two carbon atoms, eight oxygen atoms in this balanced chemical reaction.

Answer from: Enyo07

According to the law of conservation of $\boxed{\text{mass}}$ , the number of atoms in the products of a chemical reaction must be balanced with the number of atoms in the reactants.

Further Explanation:

Chemical reaction

It is the conversion of one set of chemicals into another one. The substances that were originally present are known as reactants. The bonds present in this set of chemicals are broken with the help of energy. The new substances formed after the completion of a chemical reaction are called products. These are produced by the formation of new bonds during the reaction.

Each chemical reaction is characterized by a chemical equation. These chemical equations need to be balanced in order to make the number of atoms of each kind on both sides of the reaction equal. This is done in accordance with the law of conservation of mass. It states that mass cannot be produced or destroyed in a chemical reaction. So the number of atoms of each type on the reaction side must be equal to that on the product side of the equation.

Consider the following chemical reaction:

${\text{2F}}{{\text{e}}_{\text{2}}}{{\text{O}}_{\text{3}}} + 3{\text{C}} \to 4{\text{Fe}} + 3{\text{C}}{{\text{O}}_2}$

On the reactant side,

The number of Fe atoms is 4.

The number of C atoms is 3.

The number of O atoms is 6.

On the product side,

The number of Fe atoms is 4.

The number of C atoms is 3.

The number of O atoms is 6.

In the above reaction, the number of Fe, C and O atoms are the same on both the reactant and the product side and therefore the equation is said to be balanced.

Learn more:

What does conserving mass mean in a chemical reaction? Write the chemical formula of the compound:

Answer details:

Grade: High School

Chapter: Basic concepts of chemistry

Subject: Chemistry

Keywords: chemical reaction, balanced, chemical equation, reactants, products, atoms, reactant side, product side, law of conservation of mass.

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