In what way are the chemical equations useful to us?
↵Chemical equation gives us the complete information about the reaction taking place. It tells the number of atoms of each element participating in the reaction. It tells the neccerssary requirements such as temprature, catalyst, etc. It also tells us the state of the elements in which they are reacting.
Why do Chemist use chemical equations?
Chemists use balanced chemical equations as a basis to calculate how much reactant is needed or product is formed in a reaction. A balanced chemical equation can be interpreted in terms of different quantities, including numbers of atoms, molecules, or moles; mass; and volume.
Why do chemists use chemical equations instead of Word equations?
In chemistry, a word equation indicates the order of events of a chemical reaction. The number of moles and types of reactants yield the number of moles and types of products. Word equations help in learning chemistry because they reinforce the thought process involved in writing a chemical reaction or equation.
What symbols are used in chemical equations?
Using state symbols in chemical equations
| State symbol | Meaning |
|---|---|
| (s) | solid |
| (l) | liquid |
| (g) | gas |
| (aq) | aqueous (dissolved in water) |
What are the two types of single replacement reactions?
There are two different scenarios for single replacement reactions. In one form of the reaction, one cation replaces the other. In the other form of the reaction, one anion replaces the other.
What are the two main reactants of single replacement reactions?
During the reaction, A replaces B, forming the product compound AC and releasing the less reactive element B. An example of a single replacement reaction occurs when potassium (K) reacts with water (H2O). A colorless solid compound named potassium hydroxide (KOH) forms, and hydrogen gas (H2) is set free.