[Music] [Music] hello teachers learners and parents sir jeff po at your service website commons commons mulasa department of education interactive materials electronic self learning modules at instructional video lessons tv alternative learning system and special education access and manga learning materials [Music] um [Music] [Music] foreign okay good afternoon everyone i am tutor ann who will assist our senior high school students about the topic for week one of general chemistry 2. first of all let us thank the lord for causing deped edtech unit to work on programs like this e to lie online tutorial para makatul samoa but because we take every opportunity to be of service we will say yes i know students before i start my discussion this afternoon let us ask our students first uh facebook live students national high school good afternoon paul from cebu city and from this rejoice beta so not commenting okay pop okay now we can do great things okay for today's tutorial pop we are going to study about the intermolecular forces of attraction but it is necessary to recall the intramolecular forces of attraction which we had during our second quarter of general chemistry one so important intramolecular forces of attraction but identify nothing and intermolecular forces of attraction okay our objectives for this afternoon number one differentiate intramolecular forces of attraction and intermolecular forces of attraction to describe and differentiate the types of intermolecular forces of attraction and three determine the intermolecular forces of attraction that holds the molecules together okay there are two kinds of forces of attraction that operate in a molecule the intramolecular forces of attraction and the intermolecular forces of attraction and quarter to non-gen chem 1 but we will have a quick review the important alumni intra intramolecular forces of attraction and then identifying intermolecular forces of attraction angina coupon illustrations a discussion academy okay okay let us uh focus our attention first intramolecular forces of attraction an intramolecular forces of attraction are forces that hold the atoms together within a molecule so the sakana kademigomam illustration at all all the blue hand dowels represent the atoms of hydrogen and all the pink towels represent the atoms of chlorine thread and needle and tata in one towel uh one blue towel two one pink towel one hydrogen to one chlorine so after sowing them we now have three pairs of hydrogen chlorine towels the thread in thread bone and agbabbing hydrogen and chlorine i am of attraction the thread that binds the hydrogen and chlorine together is what we call the intramolecular forces of attraction okay paramagnetic intermolecular forces of attraction by the definition intermolecular forces are forces that exist between molecules so detox as you can see velcro velcro uh to illustrate the intermolecular forces of attraction you can infrared that's the intramolecular forces of attraction velcro hydrogen and chlorine hydrogen green that represents the intermolecular forces of attraction okay let us take a look at the structure of hydrogen chloride okay this is the structure of hydrogen chloride so gen chem one a periodic table group seven so c chlorine i may 7 valence electron pair hydrogen the bond that exists between hydrogen and chlorine is what you call the intramolecular forces of attraction hydrogen ion electron chlorine is making this hydrogen partially positive and then this fluorine that maramination electron peron electron from hydrogen that makes chlorine partially negative so the partial positive of uh this hydrogen is attracted to the partial negative of this chlorine cayami attraction between this hydrogen and this chlorine although different molecules sha this is a molecule of hydrogen chloride another molecule of hydrogen chloride thermal attraction between them because they have uh opposite charges this is partially positive and this is partially negative okay let us focus uh our topic first with the intramolecular forces of attraction okay let us discuss the types of intramolecular forces of attraction the first one is the ionic bond ionic bond is formed by the complete transfer of valence electron between atoms so laginating ionic it is composed of uh it is a combination of metal and a non-metal it is formed by the complete transfer of valence electron see metal in ionic bonds metal loses electron to become a positively charged cat ion so cna is some electron electron idonate chlorine making sodium positive not partially positive but positive because and then c chlorine the non-metal accepts those electrons to become a negatively charged an ion the charge will be negative and that makes chlorine now chlorine are ion an anion okay it is a type ionic bond is a type of chemical bond that generates two oppositely charged ions market two oppositely charged c sodium no negative electron another intramolecular forces of attraction is what we call covalent bond this bond is formed between atoms that have similar electronegativities so um i i almost the same and like this is a combination of both non-metal elements because both atoms have similar affinity for electrons desire so there are two types of covalent bond we have non-polar covalent and we have polar covalent okay a non-polar covalent is formed foreign students okay but focus firstly to starting uh discussion a nonpolar covalent is formed between same atoms or atoms with very similar electronegativities so para hacilan electronegativities example c chlorine sickle c chlorine electrons you know some chlorine atom then electrons each chlorine atom shares one electron each other shared pair of electrons so see some chlorine another chlorine pitot s is non-polar covalent bond okay this is non-polar and nonpolar covalent bond students okay um non-polar covalent bond kapag an unclassic element it is present okay this one is present non-metal elements now hallows same atoms or atoms with very similar electronegativities okay parasa polar covalent bond polar covalent bond is formed when atoms of slightly different kanina same electronegativity electrons to satisfy the octet rule polar covalent lamin is formed when atoms of slightly different electronegativities share electron okay meso massachusetting uh facebook live went to delay long siguro when two atoms of the same electronegativity share their atoms to be stable okay paramagne stable yes thank you mj for uh typing in your answer so let us now proceed to polar covalent bond so in polar covalent bond formed when atoms of slightly different electronegativities share electron c chlorine electron say hydrogen amide so hydrogen and chlorine share a pair of electrons c chlorine is more electronegative electronegativity is the ability of an atom to hold or attract electrons with hydrogen to satisfy the octet rule see hydrogen am i 2.1 electronegativity chlorine iii electronegativity so i'm tendency i am designing hydrogen the chlorine pulls the shared pair of electrons towards itself developing a partial negative charge c chlorine so apart electrons that makes chlorine partial negative and then see hydrogen that makes that hydrogen partial positive okay i'm not a science teacher but i am interested to learn from botola and zambales philippines okay first question what is the intramolecular forces of attraction that forms when atoms share electron okay miso sible okay the intramolecular forces of attraction that forms when atoms share electrons ionic thank you for your participation next question what is the intramolecular forces of attraction among that generates two opposite charged ion okay what is the intramolecular forces of attraction that generates two opposite charge ion okay let us read the comments generates like a transfer is it ionic or non-polar so pilipote a let us check if your answers are correct if your answer is correct okay green pink okay thank you next question what kind of covalent bond is formed when atoms of slightly different electronegativities share electron is slightly different electronegativities share electrons let us check slightly different electronegativities braille polar correct hanelin gamet correct b okay polar so salamat active students a senior high school next what kind of covalent bond is formed between same atoms or atoms with very similar electronegativities okay so let's wait for our students sagothni braille i know me rv ambilez rv b sabimo polar okay so uh intramolecular forces of attraction now we are going to discuss about the intermolecular forces of attraction this uh intermolecular forces are much weaker than the intramolecular forces of attraction but are important because they determine the physical properties of molecules catholic boiling point melting point density and enthalpy of fusion and vaporization so the first intermolecular forces of attraction is dipole-dipole interactions ion-dipole interactions hydrogen bonding and london dispersion forces intermolecular forces of attraction and we will focus first sa dipole-dipole interactions anatom dipole-dipole interactions dipole-dipole forces are attractive forces between the positive end of one polar molecule and the negative end of another polar molecule so molecule noun this is a polar molecule another polar molecule so young positive end neto like this hydrogen is attracted to the negative uh chlorine atoms so that's a negative end of another polar molecule so polar molecule ambawat is a nato partially positive is attracted to the partially negative of another molecule soyunpo dipole dipole forces or are dipole-dipole forces vis-a-vis polar molecules both of them has partially positive and partially negative another is iron dipole interactions ion dipole interaction interactions is an attractive force that results from the electrostatic attraction between an ion and a neutral molecule that has a dipole so it is most commonly found in solutions molecules no water molecules non-water helium uh in here again a positive ion attracts the partially negative and positive ion attenuation okay positioning i attracted to the partially negative of this polar molecule water see water i made partially positive and at my partially negative see sodium i attracted oxygen so my bonding again exists case sodium chloride you know intramolecular forces of attraction yeah permeable i attracted guy partially negative oxygen and a partner water molecule okay it's a positive cation attracts the partially negative end of a neutral polar molecule so i'm just emphasizing that calcium later hydrogen bonding this is a special kind of dipole-dipole interaction that occurs specifically between a hydrogen atom bonded to the eye to either an oxygen nitrogen or fluorine atom so um academy hydrogen just wanna have fun hydrogen just want to have fun angus paramag form and hydrogen bonding among other molecules named fluorine oxygen and nitrogen um don't nego form an hydrogen bond okay the partially positive end of hydrogen is attracted to the partially negative end of the fluorine oxygen or nitrogen of another molecule example this is water molecule okay water molecules we have three water molecules see partially positive hydrogens is a molecule nato attracted k oxygen bucket as a hydrogen bond exist another molecule i'm a fluorine oxygen and nitrogen so you know i don't exist hydrogen bond ion hydrogen bonding exists between water molecules intramolecular forces of attraction is polar sharing of electron dito the hellkite partially positive hydrogen at partially negative oxygen nakakara and hydrogen bonding again specific fluorine oxygen and nitrogen hydrogen bonding is a relatively strong force of attraction between molecules and considerable energy is required to break hydrogen bonds boiling point and water hydrogen bonding hydrogen bonds boiling point on water and 100 degrees celsius it is because of hydrogen bond okay relatively strong force of attraction between molecules and considerable energy is required to break hydrogen bonds and the fourth london uh the fourth intermolecular forces of attraction is what you call london dispersion forces the london dispersion forces is the weakest of the intermolecular forces and exists between all types of molecules whether ionic or covalent polar or nonpolar so indirection again exists now okay for example we have bromine has more electrons than chlorine um atomic numbering bromine atomic numbering bromine parallel difference um atomic number in the chlorine i two digits seventeen thank you again lauren canyon periodic table see bromine i my atomic number nah 35 c chlorine and my atomic number in a 17. so sebromine will have stronger london dispersion forces than chlorine electrons the more electrons a molecule has the stronger the london dispersion forces are contingent diatomic molecules cybromine a young bond that exists between two atoms of bromine and then polaroidenions are two atoms okay uh very active this afternoon thank you then mark i'll join villarram for answering and for uh karil guerzo alcantara okay thank you for answering now i prepared few questions again and paquered comment section ang thank you verge francis galesa okay first question okay what is the attractive force that exists between the positive end of one polar molecule and the negative end of another polar molecule voila and a letter c so again antalya is alive so a ion dipole b hydrogen bond c dipole dipole and d london dispersion what is the attractive force thank you mj the answer is dipole dipole next question it is an attractive force that is commonly found in solutions especially ionic compounds in polar liquids okay for the options a iron dipole b hydrogen bond c dipole dipole and d london forces it is an attractive force that is commonly found in solutions especially ionic compounds in polar liquids cells padilla okay fabulous next which of the following compounds will not have hydrogen bond okay options a nitrogen trihydride b okay uh hydrogen sulfide c water and d hydrogen fluoride okay and upon compounds will not have hydrogen bond angsta okay sabine scala b edda armada b mark amano b david morales b let's check just want to have fun next which one of the following exhibits dipole-dipole attraction between molecules okay salamat and exactly facebook live which one of the following exhibits dipole-dipole attraction between molecules a oxygen gas o2 b water c hydrogen gas and b fluorine gas which one of the fun exhibits dipole-dipole attraction between molecules angsagot eye sabine susan pena field and ib let us check if your answer is correct okay correct which of the following diatomic molecules will have the strongest london dispersion forces number of electron matas and london dispersion forces a fluorine gas f2 bbr2 c cl2 chlorine gas and d i2 okay kindly type in your answer let us check if d is the correct answer okay d is the correct answer electrons and i regina cilia quick discussion about the intermolecular forces of attraction none agree with intramolecular forces of attraction let us thank the edtech unit for their efforts 5 20 to 6 o'clock for our next topic next week i properties of water and its uh molecular structure in relation to again intermolecular forces of attraction pero properties of water impagus students teachers uh shout outs kosa las pinas national high school senior high school and junior high school ganondon samantha congratulations albert aguilar national high school maratho and god bless us all thank you for [Music] fb page at educational technology unit channel say youtube at zadef attack at deputy social media account [Music] palam you