Describe the general types of intermolecular forces uno pptx

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1. DESCRIBE THE GENERAL TYPES OF INTERMOLECULAR FORCES

2. A single drop of water is made up of thousands and millions of water molecules. What holds these molecules? Forces that holds molecular together is called “ intermolecular forces ” The attractive forces present between molecules.

3. As two molecules approach together the negatively charged electrons in one molecule are attracted to the positively charged nuclei in the other molecule. At the same time, the electrons in the other molecules repel the electrons . The complex combination of attraction and repulsion result to a weak overall attraction exist between the two molecules. THIS WEAK ATTRACTION IS CALLED DISPERSION FORCE . Intermolecular force is called VAN DER WAALS FORCE

4. DESCRIBE THE GENERAL TYPES OF INTERMOLECULAR FORCES by J oshua G . J avier WHAT IS FORCE ? IN PHYSICS ,IT IS THE PUSH OR PULL THAT IS AT WORK IN OBJECT/S,WHICH ONLY IS THE RESULT OR THE NATURAL EFFECT OF OBJECTS HAVING INTERACTON.BUT,WITH NO INTERACTION,THERE IS NATURALLY AND AUTOMATICALLY NO FORCE AT WORK.FORCES MANIFESTS OR IS EVIDENT THROUGH MOTION.

5. FORCES MANIFESTS OR IS EVIDENT THROUGH MOTION. FORCE CAN DRAG US DOWN OR LIFT US UP,OR IT CAN PUSH US TO THE LEFT OR PULL US TO THE RIGHT.IN THE SAME WAY ,IT CAN CHANGE THE DIRECTION OF AN OBJECT’S MOTION. INTERMOLECULAR FORCE IS A TYPE OF FORCES AT WORK OUTSIDE THE TWO ELEMENTS JOINING THEM WITH THE OTHER GROUP OF COMBINED ELEMENTS

6. DIPOLE-DIPOLE INTERACTIONS -IS THE TYPE OF INTERMOLECULAR FORCES THAT HAPPENS BETWEEN A PARTIALLY POSITIVE CHARGED ELEMENTS AND A PARTIALLY NEGATIVE CHARGED ELEMENT, OR SIMPLY BETWEEN TWO POLAR CONVALENT BONDS.

7. Dipole-dipole forces Occurs between polar molecules .This is due to the partial positive pole and the partial negative pole of the molecules. In essessing the relative strengths dipole-dipole forces between two different substances,compare their polarities . A more polar substance will have stronger dipole-dipole force compared to a less polar one.

8. HYDROGEN BONDING IS THE TYPE OF INTERMOLECULAR FORCE THAT HAPPENS ONLY BETWEEN HYDROGENS THAT ARE INTERMOLECULARLY BONDED WITH FLUORINE ,OXYGEN AND NITROGEN .THE POSITIVELY CHARGED HYDROGEN IS ATTACHED TO THE PARTIALLY NEGATIVELY CHARGED FLOURINE,OXYGEN,AND NITROGEN.

9. Hydrogen bonding A very strong dipole-dipole interaction. Occurs in polar molecules containing hydrogen and any one of the highly electronegative elements. Florine , Oxygen, Nitrogen ,Hydrogen tends to be strongly positive due to the strong tendencies of ( f,o , or n ,) to attract the electrons. The highly electronegative elements make hydrogen strongly positive. One of the strongest type of intermolecular forces.

10. LONDON-DISPERSION FORCES - IS THE TYPE OF INTERMOLECULAR FORCE THAT HAPPENS IN ALL TYPES OF BONDING,WHETHER IONIC,COVALENT-POLAR OR NON –POLAR . THE HIGHER THE ELECTRON THAT THE MOLECULE HAS,THE STRONGER IS ITS LONDON-DISPERSION FORCES.

11. London dispersion force : - the only force present in non polar molecules .It is very weak and act in very small distance .It is formed due to the attraction between the positively charged nucleus of an atom with the negatively charged electron cloud of a nearby atom .

12. The relative strengths of london dispersion forces between two different substances,compare their molecular weight and size. Larger and more massive molecules are more polarizable (i.e. they have a greater tendency to have distorted electron clouds)and have stronger intermolecular forces of attraction

13. Types of Intermolecular Forces An intermolecular force is an attractive force that arises between the positive components (or protons) of one molecule and the negative components (or electrons) of another molecule. Various physical and chemical properties of a substance are dependent on this force. The boiling point of a substance is proportional to the strength of its intermolecular forces – the stronger the intermolecular forces, the higher the boiling point.

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15. ACTIVITY TIME!!

16. IT IS A WEAK ATTRACTION CALLED?

17. ANSWER: DISPERSION FORCE

18. IT IS THE PUSH OR PULL THAT IS AT WORK IN OBJECT/S,WHICH ONLY IS THE RESULT OR THE NATURAL EFFECT OF OBJECTS HAVING.

19. ANSWER: FORCE

20. A TYPE OF FORCES AT WORK OUTSIDE THE TWO ELEMENTS JOINING THEM WITH THE OTHER GROUP OF COMBINED ELEMENTS.

21. ANSWER : INTERMOLECULAR FORCE

22. Intermolecular forces are the forces that bind two molecules together. Physical properties are affected by the strength of intermolecular forces.  Melting, Boiling , and Freezing points increase as intermolecular forces increase. Vapor pressure decreases as intermolecular forces increase.

23. QUIZ !!!!!!!