Chemical equations must always balance due to the principles outlined in The Law Of Conservation of Matter. This scientific law states that matter cannot be created out of nothing nor can it be destroyed. Therefore, the same amount of matter, in the form of atoms, must exist both before and after the chemical reaction. The matter may change form or location, but it cannot disappear completely or appear out of nothing.Know More
It is sometimes easier to imagine the atoms that make up a chemical equation as something larger. For example, if one is making salad, he might start with a head of lettuce, a whole tomato and a carrot. He needs to chop these vegetables up to make the salad, but he has not actually made some of the vegetables disappear just because he cut them into smaller pieces. New vegetables have not been created, the components of the salad have just been mixed together. The same is true of chemical equations which begin with a certain amount of one element and end with the same amount, on the atomic level, of another.
One of the simplest chemical equations is H2 + O2 -> H2O. That is, two atoms of hydrogen and one atom of oxygen combine to form a single molecule of water.Learn more about Chemical Equations
Chemical equations are balanced to satisfy the law of the conservation of mass. Since the law states that matter cannot be created or destroyed, a balanced equation is necessary to ensure the same amount of matter in both the reactants and the products of a chemical equation.Full Answer >
Balancing a chemical equation is important because it shows the ratio of elements needed for the reaction to proceed properly. This allows scientists and researchers to use mathematical formulas to determine how much of one reactant is needed to produce the product.Full Answer >
A chemical reaction occurs when the reactants break into constituent ions and recombine to form different products. In this case, lead nitrate and potassium chromate recombine to form lead chromate and potassium nitrate. For the equation of the reaction to be balanced, the number of atoms on each side of the equation must match.Full Answer >
Writing a beta decay equations involves denoting the emission of a beta particle as the loss of an electron. Beta decay involves a neutron decaying into a proton and an electron emission (beta particle); the atomic number increases by one, but the mass number remains the same. The lost electron does not affect the electrons in the atom’s shell.Full Answer >