Physical Change and Chemical Change

Physical Change and Chemical Change

Hi viewers: We all know this philosophical line "The change is the only permanent thing in the nature" but scientifically we can broadly distinguish the changes that are occurring in the nature day and night.  In this blog  "Physical Change and Chemical Change" we will check it out what are differences between the physical changes and chemical changes. Physical Change and Chemical Change Most of the substances undergo different types of changes of which physical and chemical changes are most important.   Physical change It is the temporary change of a substance, the original substance may be obtained if the cause of change is removed. Eg. Water changes to steam this is a physical change because the composition of water and steam are same and if the heat is removed water is obtained again.   Properties of physical change 1.  It is a superficial change 2.  It is a temporary change 3. Original substance may be obtained if the cause of change is removed 4.  It may or may not accompany with thermal...
Read More
Definition of Matter and its States

Definition of Matter and its States

Hello viewers, Today we are going to discuss about Definition of Matter and its States.  So what is matter?  Matter is the “stuff” of the universe — the atoms, molecules and ions that make up all physical substances. Matter is anything that has mass and takes up space.  The formal definition is as follows: What is a matter? The Answer is Matter is anything that has mass contained in it.   Matter occupies space   Since matter occupies space so it has volume States of Matter Matter may exists in three states solid, liquid and gas   Solid matters are-  a book, a pen, a table, a chair, etc. Liquid matters are-  water, milk, honey Gaseous matter is- air around us.   Matter is made up of molecule.  These particles are too small to be seen under a simple microscope. These molecules attract each other with a force. The force is called intermolecular force. There is also some space between the molecules, called intermolecular space. Greater intermolecular force holds these molecules together Weaker intermolecular force cannot hold these molecules together   Intermolecular...
Read More