Definition of atom
Definition of elements
Definition of cohesive force
Definition of adhesive force
Definition of atom
Definition of elements
Definition of cohesive force
Definition of adhesive force
Atom:- the smallest particle of a chemical element that can exist. It has chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical attraction.
Element:-
An element is a substance whose atoms all have the same number of protons: another way of saying this is that all of a particular element's atoms have the same atomic number.
Elements are chemically the simplest substances and hence cannot be broken down using chemical reactions.
Cohesive force and Adhesive force:- Cohesive force is the force acting between molecules of the same substance. Like in liquid water force acts between molecules of water. Whereas adhesive force acts between molecules of different substances.
Cohesion is the property of like molecules (of the same substance) to stick to each other due to attraction. Adhesion is the property of different molecules or surfaces to cling to each other. For example, solids have high cohesive properties so they do not stick to the surfaces they come in contact with. On the other hand, gases have weak cohesion. Water has both cohesive and adhesive properties. Water molecules stick to each other to form a sphere. This is the result of cohesive forces. When contained in a tube, the water molecules touching the surface of the container are at a higher level. This is due to the adhesive force between the water molecules and the molecules of the container.
Atom:- the smallest particle of a chemical element that can exist. It has chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical attraction.
Element:-
An element is a substance whose atoms all have the same number of protons: another way of saying this is that all of a particular element's atoms have the same atomic number.
Elements are chemically the simplest substances and hence cannot be broken down using chemical reactions.
Cohesive force and Adhesive force:- Cohesive force is the force acting between molecules of the same substance. Like in liquid water force acts between molecules of water. Whereas adhesive force acts between molecules of different substances.
Cohesion is the property of like molecules (of the same substance) to stick to each other due to attraction. Adhesion is the property of different molecules or surfaces to cling to each other. For example, solids have high cohesive properties so they do not stick to the surfaces they come in contact with. On the other hand, gases have weak cohesion. Water has both cohesive and adhesive properties. Water molecules stick to each other to form a sphere. This is the result of cohesive forces. When contained in a tube, the water molecules touching the surface of the container are at a higher level. This is due to the adhesive force between the water molecules and the molecules of the container.
