What are 4 things included in a chemical equation?

Answer 1

Number of moles of reactant and products, the physical states of the reactants and products, the heat that is absorbed or evolved, whether the reaction proceeds forward only or is reversible, the catalyst and the promotors used, the arrows which show the evolution, precipitation etc of products

Answer 2

Most equations will be written with the reactants on the left and the products on the right, but whichever way the arrow points is the direction in which the chemical reaction will proceed. If there are arrows that point both ways (one above the other), then the reaction is at equilibrium and both compounds are reactants as well as products; the reaction is proceeding in both directions.

Answer 3

A chemical equation is usually made up of two parts the reactants on the left and the products on the right side of the equation. Sometimes there may be only one chemical substance that will break up into two or more products as occurs in the formula when plant glucose is broken down to water and carbon dioxide.

Answer 4

A chemical equation may involve much more than two compounds, and depending on the equation, they can be very very different compounds.

In any case, the compounds, regardless how many, are called reactants.

Answer 5

A chemical equation should include:

1. the reactants
2. the products
3. the direction of the reaction - which is how you define what is a reactant and what is a product
   
4. the stoichiometry, i.e. the ratio of the reactant(s) and the ratio of the product(s)

if the reaction requires some outside input such as light, e.g. light as an input to drive photosynthesis or uv radiation to drive the formation of ozone in the upper atmosphere, that should be noted when writing the equation. Usually something like that is written either as something like " + sunlight" on the reactant side of the equation or as a note above the arrow showing the direction of the reaction.

Answer 6

Reactants on the left side of the arrow, products on the right side.