What is a molecular equation?
A molecular equation is an equation in which the formulas of the compounds are written as though all substances exist as molecules. However, there is a better way to show what is happening in this reaction. Other common categories of single-replacement reactions are hydrogen replacement and halogen replacement.
What is a balanced symbol equation?
A balanced symbol equation has the same number of atoms of each element on both sides of the arrow. To balance an equation, add numbers to the left of one or more formulae. Here is one way to work out how to do this for the reaction between nitrogen and hydrogen. Step. Result.
What is an example of a balanced chemical equation?
A balanced chemical equation occurs when the number of the atoms involved in the reactants side is equal to the number of atoms in the products side. In this chemical reaction, nitrogen (N2) reacts with hydrogen (H) to produce ammonia (NH3). The reactants are nitrogen and hydrogen, and the product is ammonia.
What are the 5 types of chemical equations?
The five basic types of chemical reactions are combination, decomposition, single-replacement, double-replacement, and combustion.
What is molecular formula and example?
The molecular formula of a compound may be the empirical formula, or it may be a multiple of the empirical formula. For example, the molecular formula of butene, C4H8, shows that each freely existing molecule of butene contains four atoms of carbon and eight atoms of hydrogen. Its empirical formula is CH2.
How do you write a balanced ionic equation?
Write the ionic equation by breaking all the soluble ionic compounds (those marked with an (aq)) into their respective ions. Each ion should be shown with its charge and an (aq) to show that it is present in solution. Use coefficients to show the number of each ion present.
What are the 2 types of chemical equations?
The Common Types of Chemical ReactionsCombination.Decomposition.Single displacement.Double displacement.Combustion.Redox.
What does chemical formula mean?
A chemical formula identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element. In empirical formulae, these proportions begin with a key element and then assign numbers of atoms of the other elements in the compound, by ratios to the key element.
What happens if a chemical equation is not balanced?
Chemical reactions must be balanced, or in other words, must have the same number of various atoms in the products as in the reactants. If a chemical reaction is not balanced, no information about the relationship between products and reactants can be derived.
What is a balanced and unbalanced equation?
IMPORTANT DEFINITION: A balanced equation has equal numbers of each type of atom on each side of the equation. It is an unbalanced equation (sometimes also called a skeleton equation). This means that there are UNEQUAL numbers at least one atom on each side of the arrow.