Importance of the water and its structure
The importance of the water There are no living organisms that can live without water as it is the medium through which all the vital processes take place, The water in the oceans and...
Category: The Matter
Matter construction and properties of molecules of matter
The molecules The matter consists of very small structural units known as the molecules, The molecule is the smallest part of the matter which can exist freely, and it has the properties of the...
Metals and nonmetals, Economic importance of some metals & nonmetals
Every day, we can see the matter around us which has a mass and a volume. The matter may exist as an element or a compound, The element is the simplest form of matter that...
What is the difference between physical & chemical changes?
The Physical and the Chemical changes of the matter The changes that may occur to the matter are the physical changes and the chemical changes. The physical change The physical change is a change...