Q: When balancing a chemical equation one must never change the?

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It is important never to change a subscript {note correct spelling} in a chemical formula when balancing a chemical equation, because changing a subscript produces a formula that specifies a chemical substance different from the one in the original equation.

You add or change the coefficient, never the subscript or it becomes a completely different molecule.*cough 8th grade science*

being able to write a balanced equation for a reaction is very important. By balancing an equation we can tell how much material we will need to start with, what the likely products to form, and how much of these products will form

because the fruit changes its form and it can never return to its original state and chemical reaction are changes that can never return to its original state

No. In a physical change, the substance maintains its chemical composition.

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It is important never to change a subscript {note correct spelling} in a chemical formula when balancing a chemical equation, because changing a subscript produces a formula that specifies a chemical substance different from the one in the original equation.

There has to be the same numbers and types of elements on both sides of the equation. This is accomplished by adding coefficients in front of the chemical formulas as needed. Never change a formula when balancing an equation.

You add or change the coefficient, never the subscript or it becomes a completely different molecule.*cough 8th grade science*

No. Never change the subscripts because then you are changing the formula of the substance to something else. You can only change the amount of a substance by adding a coefficient in front of the formula. If there is no coefficient, it is understood to be 1.

It is customary to use integers.

being able to write a balanced equation for a reaction is very important. By balancing an equation we can tell how much material we will need to start with, what the likely products to form, and how much of these products will form

Subscripts state how many atoms and Coefficients state how many molecules there are. So when balancing an equation you always adjust the coefficients. When this equation is balanced, what is the coefficient for Ni(NOËÄ)ËÄ? 4

To balance a chemical equation, you can change the coefficients (number of molecules). Remember: You cannot change the subscripts.When we balance an equation we change the number of atoms on one or both sides of the equation by means of simple mathematical calculation. That is, we change the number of molecules of one or more reactants or products. When the number of atoms of each element is equal on both sides of the equation, and cannot be reduced equally, the balancing process is complete.

The kinds of atoms and the number of each kind are the same on both sides of a balanced chemical equation.

because the fruit changes its form and it can never return to its original state and chemical reaction are changes that can never return to its original state

Co-efficients are written in a chemical equation to balance the equation. this is due to the conservation of mass seeing how we can't make substances out of nothing. For Example. NaOH + H2SO4 --> Na2SO4 + H2O As you can see on the left side, there is only one Na (sodium) atom, but on the right hand side we have 2. meaning that an extra sodium atom appeared from no where and this VIOLATES the conservation of mass. so we must balance is 2NaOH+H2SO4 --> Na2SO4 + 2H2O There are 2 Na on both sides There is 1 sulfur (s) on both sides there is 4 H on both sides and 6 oxygen on both sides. Hope this helps :D

physical because a chemical change means it can never form back