Metal atoms are held strongly to each other by metallic bonding to form a giant lattice structure. In this lesson, we will learn about...

In a laboratory, different instruments are used for different measurements. Do you know what these instruments are? In this lesson, we...

In the previous lesson we will learned about elements, in this lesson we will learn about compounds and mixtures. What are Compounds? A...

Do you know about any compound which reduces the acidity of soil? Are you thinking about calcium hydroxide or calcium oxide? Do you know...

An acid is a substance that produces hydrogen ions, in aqueous solution. Some of the common acids, their formulae and the ions they...

We have studied that atoms are the smallest particles made up of further sub-atomic particles. An element is made up of several atoms. In...

Metals, non-metals and ions make a bond to stabilize them. For metals, there is metallic bonding. For ions, there is ionic bonding. Do...

Properties of compounds differ from their reactions. Like other compounds, ionic compounds have some specific properties. In this lesson,...

Metals, non-metals and ions make a bond to stabilize them. For metals, there is metallic bonding. For non metals, there is covalent...

All matter is made up of atoms. Atoms are so tiny that they need to be magnified millions of times in order to be seen. However atoms are...

Just like solids, liquids can be impure. They can be removed through different methods according to their properties. Do you know what...

Some substances have impurities added in them which changes their physical properties. However, these impure substances can be removed....

Have you ever seen how an ice cream melts? Matter is something that has mass and occupies space. According to the kinetic particle...

We have studied the difference between physical and chemical changes. In this lesson we would study how we can define the occurrence of a...

Physical changes are those changes which are reversible. Chemical changes are those changes which are irreversible. Reversible changes...

The hypothesis that matter was made out of atoms, needed a lot of experimental evidences. French Chemist, Antoine Lavoisier carried out...

In most reactions, gases are released. Most common of these gases are: Hydrogen gas Carbon dioxide gas Reactions like: Sulfur +...

In the previous lesson we came to know about the reactivity series in detail. Today we will go through how the reactivity series is...

What is a reactivity series? Reactivity series is a list of metals that are arranged/listed according to their reactivities. The most...

Acids: Acid’s pH when measured by a pH scale is always below 7, the lower the pH the more acidic the substance is. Acid turn the blue...