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# Chemistry

## Electron configuration of sodium and Sodium ion

Sodium is denoted by the letter Na and its atomic number is 11. The number of electrons in Sodium is 11. This post we will checking Electron configuration of sodium and Electron configuration of sodium ion Electron configuration of Sodium Electron configuration is the Arrangement of electrons in different orbitals of an atom. The electronic …

## Electron configuration of oxygen

Oxygen is denoted by the letter O and its atomic number is 8. The number of electrons in Oxygen is 8. It is a highly reactive non-metal. We will checking about Electron configuration of oxygen Electron configuration of Oxygen Electron configuration is the Arrangement of electrons in different orbitals of an atom. The electronic configuration …

## Electron configuration of calcium

Calcium is denoted by the letter “Ca” and its atomic number is 20. The number of electrons in Calcium is 20. We will checking about electron configuration of calcium The electron configuration of calcium Electron configuration is the arrangement of electrons in different orbitals of an atom. It is obtained as per the below rules …

## Physical and chemical properties of water?

What are physical and chemical properties of water? In this article learn about the physical and chemical properties of water. Water which in chemistry is known as $H_2O$ is everywhere and is essential for life forms to exist on the planet Earth.Let us explore some of the physical and chemical properties of water. Water is …

## What is pure substance?

Although we often use the term “pure substance” informally, it has a precise meaning in science, particularly chemistry. In chemistry, a pure substance has definite composition and distinct chemical properties. We will explore what is pure substances in chemistry in this article. In everyday language, a pure substance is one that has no contamination or impurities …

## Difference Between Metal And Non-Metal

Learn the difference between metal and non-metal. Discover how they differ in terms of physical and chemical properties. Metals and non-metals are an integral part of our lives. Apart from day-to-day life situations, metal and non-metal are industrially very important. All these metals and non-metals are obtained from minerals. All the elements of a periodic …

## Is air a pure substance or a mixture?

We all are familiar with air. While studying pure substances and mixtures there comes a question Is air a pure substance or a mixture? Well, this article is all about explaining why air is regarded as a mixture, not as a pure substance. TLDR;Air is a gaseous mixture that contains nitrogen, oxygen, methane, nitrous oxide, and other gases. Because …

## Is Milk A Pure Substance or a Mixture?

We all are familiar with milk. While studying pure substances and mixtures there comes a question Is Milk A Pure Substance or a Mixture? Well, this article is all about explaining why milk is regarded as a mixture, not as a pure substance. TLDR;Lactose and casein are found in milk. It’s a colloidal solution. Milk …