# When the number of atoms are equal on both sides of the equation?

## When the number of atoms are equal on both sides of the equation?

Balanced chemical equation Balanced chemical equation – A chemical equation in which the number of each type of atom is equal on the two sides of the equation. Subscripts – Part of the chemical formulas of the reactants and products that indicate the number of atoms of the preceding element.

## Are the number of atoms on each side are always the same?

Atoms are not CREATED or DESTROYED during a chemical reaction. Scientists know that there must be the SAME number of atoms on each SIDE of the EQUATION. To balance the chemical equation, you must add COEFFICIENTS in front of the chemical formulas in the equation.

## Why do you need to have the same number of atoms on both sides of a balanced equation?

A: All chemical equations must be balanced. This means that there must be the same number of each type of atom on both sides of the arrow. That's because mass is always conserved in chemical reactions.

## Why must the number and type of atoms be the same in the products of a chemical reaction as in the reactants?

Because atoms are rearranged in a chemical reaction, there must be the same number of sodium atoms and chlorine atoms in both the reactants and products. Chemical equations represent how atoms are rearranged in a chemical reaction.

## When a chemical equation contains the same number of atoms on both sides of the arrow the equation is balanced?

1 Answer. A balanced equation demonstrates the conservation of mass by having the same number of each type of atom on both sides of the arrow.

## How do you determine how many atoms each element has?

To calculate the number of atoms in a sample, divide its weight in grams by the amu atomic mass from the periodic table, then multiply the result by Avogadro's number: 6.02 x 10^23.

## Is the number of element found on the left side equal to the number of element on the right side of the equation?

Product (# of atoms) The numbers of each element on the left and right side of the equation must be equal. The charge on both sides of the equation must be equal.

## Does the total number of molecules on each side of the equation have to be balanced?

Chemical equations must be balanced — they must have the same number of atoms of each element on both sides of the equation.

## Why is the number of hydrogen atoms and oxygen atoms the same in both the reactants and the products?

The law of conservation of matter says that matter cannot be created or destroyed. In chemical equations, the number of atoms of each element in the reactants must be the same as the number of atoms of each element in the products.

## Why is it important for a chemical equation to be balanced?

A balanced equation obeys the Law of Conservation of Mass. This is an important guiding principal in science. Finally, a balanced equation lets up predict the amount of reactants needed and the amount of products formed. Sort of important if you re trying to decide how much fuel for a spaceship going to Mars!

## Why does the mass of a substance remain the same after a chemical reaction?

No atoms are added or taken away from the system, so the mass stays the same. Even in a chemical reaction when atoms interact and create new products, mass is conserved. This is because the new substances created are composed of atoms that were present in the reactants.

## What must be same before and after chemical reaction?

Chemical reactions involve breaking chemical bonds between reactant molecules (particles) and forming new bonds between atoms in product particles (molecules). The number of atoms before and after the chemical change is the same but the number of molecules will change.

## Why do chemical equations need to be balanced?

Answer: Chemical reaction is just a rearrangement of atoms. It can neither create nor destroyed during the course of a chemical reaction. Chemical equations must be balanced to satisfy the law of conservation of matter, that states that matter cannot be produced or destroyed in a closed system.

## How many atoms does an element have?

Elements can be made of one atom, like He, or be elemental molecules, such as hydrogen (H2), oxygen (O2), chlorine (Cl2), ozone (O3), and sulfur (S8). Atoms are not drawn to scale. Some elements are monatomic, meaning they are made of a single (mon-) atom (-atomic) in their molecular form.

## What does the number to the left of an element mean?

The whole number in the upper left corner of the atomic symbol is the atomic number.

## Why is is the number of total molecules on the left side of a balanced equation always equal to the number of total molecules on the right side of the equation?

Is the number of total molecules on the left side of a balanced equation always equal to the number of total molecules on the right side of the equation? Explain your answer. No. The number of atoms in a molecule can vary 4.

## Are there the same number of molecules in the reactants as in the products?

The number of atoms is conserved during the reaction. However, you will also see that the number of molecules in the reactants and products are not the same. The number of molecules is not conserved during the reaction.

## When a reaction is balanced there are the same number of?

1 Answer. A chemical equation is balanced when the number of each kind of atom is the same on both sides of the reaction.

## Does the number of atoms of each element remains the same before and after a chemical reaction?

From this, it can be concluded that any new substance formed during a chemical change is due to the rearrangement of the atoms of the original substance. The number of atoms of each kind remains the same, before and after the chemical change.

## What remains the same during a chemical reaction?

In a chemical reaction the total mass of all the substances taking part in the reaction remains the same. Also, the number of atoms in a reaction remains the same. Mass cannot be created or destroyed in a chemical reaction.

## What happens to the total number of atoms during a chemical reaction?

No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

## How do we know how many atoms are in an element?

If you have a sample that contains only atoms of a particular element, weigh the sample in grams and divide by the atomic weight of the element. The quotient tells you the number of moles. Multiply that by Avogadro's number, and you'll find out how many atoms the sample contains.

## Are number of atoms and number of molecules the same?

3 Answers By Expert Tutors. Take the mass and divide by the molar mass and multiply by Avogadro's number. This will yield the number of molecules. To get the total number of atoms, multiply the number of molecules you just calculated by 24 atoms of glucose/molecule.

## What determines the number of atoms in a molecular compound?

Explanation: In a chemical formula, the symbols for each element in the compound are followed by subscripts that tell us how many of that element are in the compound. The subscripts that follow each element's symbol indicate how many of that element are in the compound.

## Why do some elements have more than one number above the symbol?

Because different isotopes of the same element haves different number of neutrons, each of these isotopes will have a different mass number(A), which is the sum of the number of protons and the number of neutrons in the nucleus of an atom.

## Is the number of total molecules on the left of a balanced equation always equal to the number of total?

Is the number of total molecules on the left side of a balanced equation always equal to the number of total molecules on the right side of the equation? Explain your answer. No. The number of atoms in a molecule can vary 4.

## What does it mean to say an equation is balanced why is it important for an equation to be balanced?

A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge are the same for both the reactants and the products. In other words, the mass and the charge are balanced on both sides of the reaction.

## Why do the number of atoms stay the same?

Explanation: The Law of Conservation of Mass and Energy ("matter can neither be created nor destroyed") clearly states that a chemical change cannot alter the number of atoms in a given reaction. The atoms can only rearrange so that it can yield a new molecule/compound but the number of atoms should stay the same.

## Is the number of atoms of each element conserved during a chemical reaction How about the total number of moles?

The number of atoms is conserved during the reaction. However, you will also see that the number of molecules in the reactants and products are not the same. The number of molecules is not conserved during the reaction.