Master the Art of Balancing Chemical Equations

The law of conservation of mass states that in a closed system, the mass of the system cannot change over time.

A balanced chemical equation is a chemical equation that shows all mass is conserved throughout the reaction.

Unbalanced equations are also known as skeleton equations.

<p>A balanced chemical equation shows that the number and kinds of atoms on each side of the equation are equal, while an unbalanced equation does not.</p> Signup and view all the answers

<p>The law of conservation of mass states that in a closed chemical reaction system, the total mass of all reactants will be equal to the total mass of all products.</p> Signup and view all the answers

<p>The law of conservation of matter states that in a chemical reaction nothing new is created or destroyed. Rather, the reactants and the products contain all the same matter, it has just been rearranged during the reaction process.</p> Signup and view all the answers

<p>The law of conservation of mass formula states that the amount of mass that goes into to a chemical reaction in the reactants, must equal the amount of mass that comes out of the reaction process in the form of the products.</p> Signup and view all the answers

<p>The law of conservation of mass states that during a chemical reaction in a completely closed system, mass will not be created or destroyed.</p> Signup and view all the answers

<p>Antoine Lavoisier</p> Signup and view all the answers

<p>The law of conservation of mass states that in a closed system, the mass of the system cannot change over time.</p> Signup and view all the answers

<p>Word equation: sodium + chlorine -&gt; sodium chloride. Chemical equation: Na + Cl2 -&gt; 2NaCl</p> Signup and view all the answers

<p>400g</p> Signup and view all the answers

<p>The law of conservation of mass states that in a closed system, the mass of the system cannot change over time. Matter may change forms, but the mass of the matter is always the same before and after the change.</p> Signup and view all the answers

<p>A balanced chemical equation is a chemical equation that shows all mass is conserved throughout the reaction. In a balanced chemical equation, the number and kinds of atoms on each side of the equation should be equal.</p> Signup and view all the answers

<p>Unbalanced equations, or skeleton equations, are chemical equations that do not obey the law of conservation of mass. The number and kinds of atoms are not the same on either side of the equation.</p> Signup and view all the answers

<p>The law of conservation of mass is important in chemistry because it allows scientists to predict the amounts of products that will be made in a chemical reaction. It also helps chemical manufacturers increase efficiency in their laboratory practices.</p> Signup and view all the answers

<p>A chemical equation uses chemical formulas to illustrate what is happening in a reaction. To show the law of conservation of mass in an equation, however, the chemical equation must be completely balanced.</p> Signup and view all the answers

<p>Coefficients are whole numbers that are placed in front of reactants and products to balance the number of atoms on each side of the equation.</p> Signup and view all the answers

<p>The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction. It is related to chemical reactions because a balanced chemical equation satisfies the law of conservation of mass.</p> Signup and view all the answers

<p>The law of conservation of mass allows for one to determine the unknown mass of a product or a reactant in a chemical reaction where all other masses are known. By comparing the known masses of the reactants and products, the unknown mass can be calculated.</p> Signup and view all the answers