Chemical Bonding | Ionic and Covalent | Grade 9 Science Quarter 2 Week 2

hi peeps welcome back to my strong techie youtube channel another week on other learnings in science week two is about chemical bonding a very interesting topic right class at the end of this video lesson you are going to recognize and differentiate the different types of compounds such as ionic and covalent and their properties so without further ado let's get started with our new lesson before we start let us have a short activity metal or non-metal do you still remember how to identify if the element is metal or non-metal if not all you need to do is look at your periodic table of elements shown in your screen right now is the periodic table of elements which are grouped as to metals metalloids and non-metals metals are those colored with red [Music] metalloids are yellow and non-metals are blue let us have an example lithium is a metal element neon is a non-metal element while boron is a metalloid element [Music] if we will recall metalloids are unique group of elements that share properties of both metal and non-metals remember that class so as easy as that let us start with our activity all you need to do is identify if the element is metal or non-metal first one iron by looking in your periodic table of elements iron is a metal element that's correct next silver silver is a metal element that is right the last one hydrogen hydrogen is an example of a non-metal element good work class [Music] now let us proceed with our lesson for today [Music] do you know this man he is the famous chef called salt bae is popular because of his way of pouring salt now do you know that table salt is an example of compounds compounds are chemical substances made up of two or more elements that are chemically bound together one good example is sodium chloride or the table salt do you like bonding with your friends family or loved ones do you miss bonding with your classmates bonding as humans are very important in our social and emotional state moreover do you know that atoms bond as well and that is what we call chemical bonding chemical bonding is a lasting attraction between atoms ions or molecules that enables the formation of chemical compounds and there are several types of chemical bonding one type is ionic bonding it is formed through complete transfer of electron from one atom to another atom it exists between metals and non-metals now the question is why do atoms bond atoms bond to become stable when a metal element bond with a non-metal element that is ionic bonding wherein ions are formed [Music] ion is an atom or molecule with positive or negative charge it is formed after a metal atom transfer its valence electron to non-metal atom [Music] take note class valence electron is the electron found in the outermost shell of an atom you can determine the number of valence electron by looking at its group number in the periodic table of elements for example oxygen is in group six that is why its valence electrons is six next ions are classified as cat ion and an ion that ion when a metal atom losses electron an ion when a non-methyl atom gains electron are we clear class now let us proceed just like what i said earlier it happens between a metal and non-metal element if there is a complete transfer and gaining of electrons ionic bonding happens one example is sodium chloride where in sodium is metal and chlorine is non-metal [Music] next type of chemical bonding that we are going to have is covalent bonding covalent bonding is also called molecular bond it is a chemical bond that involves sharing of electron pairs between atoms it commonly occurs when two non-metals bond together [Music] non-metals have strong energy attractions or high electronegativity compared to metals just like hydrogen they do not need to give electrons to be stable instead they gain or share electrons to obtain stability for example fluorine is a non-metal element covalent bond completes the octet for both sharing of electrons will obtain stability another one is oxygen a non-metal element that has six valence electrons it can make two covalent bonds with hydrogen which has one valence electron resulting to h2o or water that is covalent bonding [Music] there are two types of covalent bonding non-polar covalent bond and polar covalent bond nonpolar covalent bond is when electrons are shared equally for example hydrogen has no electronegativity difference next polar covalent bond is when electrons are shared unequally for example hydrogen and fluorine fluorine has more electronegative than hydrogen therefore electronic cloud tilt stored fluorine atoms than hydrogen now let us proceed to the properties of ionic and covalent compound let us have the existence ionic exists in the solid state only while covalent exists as solid liquid and gas in terms of conductivity or the measure of the ease at which an electric charge or heat can pass through a material ionic has low conductivity while covalent has very low conductivity in terms of hardness or the resistance of the material ionic is very hard or brittle while covalent is not very hard and more flexible ionic has higher melting and boiling points than covalent when it comes to malleability and ductility both ionic and covalent are not malleable and not ductile covalent has high volatility than ionic when it comes to solubility ionic is soluble in water but insoluble in organic solvent while covalent is insoluble in water but soluble in organic solvents so these are the properties of ionic and covalent compounds [Music] that is all for our lesson for today thank you so much for watching i hope you learned something new about chemical bonding about ionic and covalent bonding do not forget to like share and subscribe [Music] bye [Music] you

Channel: Maestrang Techy

Views: 320,542

Keywords: Chemistry, Chemical Bonding, ionic bond, Covalent bond, Compounds, Valence electron, Metal or non metal, Periodic Table of elements, Properties of ionic and covalent, Grade 9 Science, Deped MELC lesso, Lesson 2 in Grade 9, Week 2 lesson in Deped Science, Differentiate ionic and covalent, What is Chemical bonding, How are ions formed?, Cation, anion, Polar covalent, NOn polar covalent

Id: 6n4_jtBQSC8

Length: 10min 45sec (645 seconds)

Published: Tue Jan 12 2021