Hi my name is Ella. I am the new girl in class. I have some queries regarding the chemistry topic taught yesterday in class. Do you mind helping me out?
Sure, we would love to help! By the way I am Hazel.And these are my friends Ruby and Tamara.
The number of atoms on both the sides needs to be equal.
So, whenever we balance a chemical equation always remember to satisfy the law of conservation of mass.
It is only when this is satisfied that an equation is called balanced chemical equation.Look ahead it is just like we play tug-of war wherein the number of people on both sides needs to be equal otherwise the game will not be fair.
The physical state of the reactants and the products could be mentioned in the equation. (aq) can be used to represent an aqueous solution. If a gas is released it could be shown by putting an arrow in upward direction.
Oh, I never thought about it that way. It is interesting. What about making it more informative?
Also,if a precipitate is formed it is indicated using an arrow in the downward direction. Reversible reactions can be indicated using a double headed arrow.The actual concentrations of the reactants cannot be mentioned so we could use con: or dil: to represent the same.
And finally, in an equation the temperature and pressure if the substance could be shown above or below the arrow. Exothermic reactions could be represented using a + heat sign on the products side and if it is endothermic then + heat on the reactants side or – heat on the products side.
Thank you so much all of you, it was very helpful. Do you want to play a game of tug-of- war?