The chemistry is around us, from the foods what do we eat until air that we breathe. Everything we do has an associated chemical reaction. But of course, with the enormous amount of things happening in our environment, it is quite easy to miss all this.
For example, we use the Water and its different forms, but There are some properties of water that most people are unaware of. Unlike most substances that do not change in volume when frozen, water does: it expands. Ice expands by about 9% more volume than the water used to make it.
TEverything that has weight or mass and takes up space is called matter. Matter is the chair or sofa you are sitting on, so is the clothes you wear, the hair on your head and the air you breathe. When we learn about matter, we inevitably learn about chemistry. Matter can be divided into very small pieces to learn what makes it what it is. AND, As far as we know, everything in the universe is made up of just over 100 elements.
All these elements make up the basic ingredients that we call matter. An element is made up of only one type of atom. And there is matter composed of a single element, such as oxygen, which is made up only of oxygen atoms. Hence, we use the periodic table of elements to organize them in order to facilitate their identification.. The periodic table It groups the elements by their atomic weight and, although most of the elements that we know are found naturally in the universe (hydrogen, helium, silicon, neon, lithium, magnesium, beryllium, aluminum, phosphorus, boron, chlorine, nitrogen. ..), there are others that have been created by scientists in laboratories; man-made (neptunium, plutonium, americium, curium, berchium and californium).
It should also be noted that although many elements occur in nature, they may not appear in pure or native form, such as alkali metals, alkaline earths and rare earth elements.