20.2 types of bonds
DESCRIPTION
20.2 Types of bonds. Warm up. What is a chemical bond? How do elements seek stability?. Objectives . Describe ionic bonds and covalent bonds Identify the particles produced by ionic bonding and by covalent bonding Distinguish between a non-polar covalent and a polar covalent bond. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/1.jpg)
20.2 Types of bonds
![Page 2: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/2.jpg)
Warm up
What is a chemical bond?
How do elements seek stability?
![Page 3: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/3.jpg)
Objectives Describe ionic bonds and covalent
bondsIdentify the particles produced by
ionic bonding and by covalent bonding
Distinguish between a non-polar covalent and a polar covalent bond
![Page 4: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/4.jpg)
Introduction Represent by drawing the way that Na and Cl form
Nacl.Represent by drawing the way H and O form H2O
![Page 5: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/5.jpg)
Gain or loss electrons
![Page 6: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/6.jpg)
Atoms and ionsAn atom that has lost or gained electrons is called
an ion.An ion is a charged particle that has either fewer
or more electrons than protons.
Group Outer e-
Lose or gain
Charge of ion
Atoms 1 1 Lose 1 +12 2 Lose 2 +213 3 Lose 3 +315 5 Gain 3 -316 6 gain2 -217 7 gain1 -1
![Page 7: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/7.jpg)
![Page 8: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/8.jpg)
Monoatomic and polyatomic ions
Ions can be two types:1- monoatomic ions (1 atom ion)2- polyatomic ions (more than one atom ion)
![Page 9: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/9.jpg)
Polyatomic ion
![Page 10: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/10.jpg)
What type of ion each of the following atoms will form?
1- potassium K (19)2- Magnesium Mg (12)3- Aluminum Al (13)4- Fluorine F (9)
![Page 11: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/11.jpg)
A bond forms
![Page 12: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/12.jpg)
Ionic bondWhat happens when you put Mg and Cl together
and allow them to react?Will they form a bond?How do you think they will form a bond? Can you draw an illustration that shows how a
bond is formed, if Mg (z=12) and Cl (z=17).What is the charge of the compound formed?
![Page 13: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/13.jpg)
![Page 14: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/14.jpg)
Think and concludeCan you predict what type of ion is formed when
one atom loses electron and the other gains electron?
Predict what type of elements lose electrons and what type of elements gain electrons?
When is an ionic bond formed?
![Page 15: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/15.jpg)
Covalent bondsHow do elements reach stability if they don’t lose
or gain?Do they form ions?Predict how water molecules are formed.
![Page 16: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/16.jpg)
Types of covalent bondsDraw the structure of:1- water2- carbon dioxide3- nitrogen gas
![Page 17: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/17.jpg)
Three types of covalent bonds1- single covalent bond (2 electrons are shared between 2 atoms)2- double covalent bond (4 electrons are shared between 2 atoms)3- triple covalent bond (6 electrons are shared between 2 atoms)Give example about a molecule which contains single covalent bond, another molecule with a double covalent bond and a third molecule with a triple covalent bond.
![Page 18: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/18.jpg)
Ionic bond VS covalent bondCompare between ionic and covalent bonds.
![Page 19: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/19.jpg)
Unusual sharingElectrons are not always equally shared between
atoms in a covalent bond.The strength of the atom is related to the size of
the atom, charge of the nucleus, and the total number of electrons an atom contains
![Page 20: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/20.jpg)
Equally or unequally sharingAtoms on the right side of the periodic table tend
to attract electrons more
![Page 21: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/21.jpg)
Polar or non-polar moleculeIf atoms of a molecule share electrons equally: the molecule is non-polar
Ex: Cl2, O2, CO2
If atoms of a molecule share electrons unequally:
The molecule is polarEx: H2O, HCl, CHCl3, HF
![Page 22: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/22.jpg)
Wrap up
![Page 23: 20.2 Types of bonds](https://reader036.vdocument.in/reader036/viewer/2022062323/56816282550346895dd2ef54/html5/thumbnails/23.jpg)
Assignments
Section review questions. Page: 614