States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
how to write chemical eqauations
A reaction in which the number of atoms on both sides of the chemical equation that is left side and right side are equal is termed as a balanced chemical equation.
The method of writing a chemical equation is given as follows:
- First, all the reactants and products are identified and then they are placed in the form of a word equation.
- The chemical names of the reactants and products are converted into chemical formulas and their state symbol is also mentioned.
- The equation is balanced at last.
For example, the reaction of nitrogen gas with hydrogen gas produces ammonia gas.
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