Chemistry

Here is a list of compounds with the common name, chemical name, and formula of these compounds. compounds with their common name, chemical name & formula

In this post, we will list down a few important properties of metals and discuss them briefly. Important Properties of Metals In general, metals have high densities In general, metals have high melting points and high boiling points In general, metals are good conductors of heat and electricity In general, metals are malleable (can be […]

Allotropes are different forms of the same element in the same state. The different forms of solid carbon are called allotropes of carbon. Diamond & Graphite are two crystalline allotropes of carbon. A few other elements also have allotropes. Oxygen has two allotropes – oxygen (O2) and ozone (O3). Diamond and graphite are both made […]

Sodium and chlorine are manufactured by the electrolysis of molten sodium chloride. When an electric current passes through molten sodium chloride, a shiny bead of sodium is produced at the cathode, and chlorine gas forms at the anode. This decomposition is caused by electrical energy in the current. In this post, we will be explaining […]

When compounds are electrolysed, new substances are produced at the electrodes. For example, when electricity is passed through molten sodium chloride, pale green chlorine gas comes off at the anode, and shiny molten sodium forms at the cathode. Apparatus that helps to investigate the products at the electrodes when aqueous solutions are electrolysed The apparatus […]

Some substances do not conduct electricity at all; others conduct electricity in some circumstances, but not in others. In this post, we will see which solids conduct electricity. Also, we will see which liquids conduct electricity. Which solids conduct electricity? The only common solids which conduct electricity are metals and graphite.When metals and graphite conduct […]

A molecule is the smallest particle that can have a separate, independent existence. When atoms of the same element join together the result is a molecule of an element. When atoms of different elements join together the result is a molecule of a compound. For example, a molecule of water contains two atoms of hydrogen […]

Relative atomic masses can be used to compare the masses of different atoms. Relative atomic masses can also be used to compare the masses of molecules in different compounds. The relative mass of a compound is called the Relative Formula Mass (symbol Mr). How to Calculate relative formula masses The relative formula mass of a […]

Reactions such as magnesium burning with oxygen are described with equations. Word equations describe the reactants (the starting substances) and the products (the final substances). Chemical or symbol equations describe what happens to the atoms, and how many of each there are in the reaction. In this post, we will focus on word equations and […]

In this post, the solubilities of various salts in water at 20 °C are listed in a table (figure 1). In this list, you can easily notice the wide range in solubilities, where silver nitrate has a very high solubility of 217 g per 100 g water and silver chloride has a very low solubility […]

The data in the table above shows how the name of a salt comes from its parent base and acid. So, magnesium oxide and nitric acid would produce magnesium nitrate. Acids with names ending in ‘-ic’ form salts with names ending in ‘-ate’. Thus, the salt from sulphuric acid will have ‘sulphate’, salt from nitric […]

The kinetic theory of matter can be used to explain how a substance changes from one state to another. A summary of the different changes of state is shown in Figure 1. These changes are usually caused by heating or cooling. Explaining Melting and freezing with the help of the Kinetic theory of matter When […]

The idea that all substances contain incredibly small moving particles is called the kinetic theory of matter. The word ‘kinetic’ comes from a Greek word meaning moving. [Related Post: Kinetic Theory of gases] The main points of the kinetic theory of matter The main points of the kinetic theory of matter are: All matter is […]

Reactions that can be reversed are called reversible reactions. Most of the chemical reactions are irreversible. But there are some processes that can be reversed. ice to water, and water to ice For example, ice turns into the water on heating: If the water is now cooled, ice re-forms. These two parts of this reversible […]

What are salts? Salts are formed when acids react with metals, bases, or carbonates. Most salts contain a positive metal ion and a negative ion composed of one or two non-metals. common properties of Salts Salts have properties in common. Salts are ionic compounds Salts have high melting points and boiling points Salts are electrolytes […]

The Halogen Group is One of the most reactive groups in the periodic table, this set includes non-metals. The name “halogen” means “salt former”, which refers to the way that elements in this group react with metals to form salts, such as sodium chloride, widely known as common salt. Tennessine (Ts) is an artificial halogen. […]

In this post, we will see how to calculate the number of protons, electrons, & neutrons from the mass number & the atomic number of an element. how to calculate the number of protons, electrons, & neutrons from the mass number & the atomic number of an element? We have to remember and use the […]

In this post, we have defined the Internal Energy of a Thermodynamic System. We have also identified the components of Internal Energy. Definition of Internal Energy in Thermodynamics In thermodynamics, the internal energy of a thermodynamic system, or a body with well-defined boundaries, denoted by U, or sometimes E, is the total of the kinetic […]

In this post, we present an embedded PDF file that contains the list of elements with their symbol, atomic number, and molar mass. The elements are arranged alphabetically, starting from Actinium (Ac) and ending with Zirconium (Zr). PDF with list of elements with symbol, atomic number, & molar mass

The kinetic molecular theory of gases is a model that helps us understand the physical properties of gases at the molecular level. This kinetic theory of gases describes this state of matter as composed of tiny particles in constant motion with a lot of distance between the particles. The kinetic molecular theory of gases is […]