Students if you are looking for the 9th Class Chemistry Chapter 4 Structure of Molecules Short Questions Notes if yes? then you visit the right place where you can easily find chapter 4 most important short questions only without answers but it is your responsibility to find answers from your 9th class Chemistry book.
Students You know that these are Chapter 4 Short Questions of Chemistry are helpful so don’t ignore to read and find answers from your textbook or Chemistry key book of the 9th class where you are comfortable learning.
Class 9 Chemistry Chapter 4 Notes
| Post Topic | Short Questions |
| Book Code | Chemistry |
| Class | 9th Class |
| Chapter/Full | Chapter 4 |
| Board | Punjab Board |
9th Class Chemistry Chapter 4 Structure of Molecules Short Questions
- Atoms of different elements react to attain a noble gas configuration, which is stable.
- Chemical bonds may be formed by complete transfer of electrons (ionic); mutual sharing (covalent) or by donation from an atom(coordinate or dative covalent).
- Metals have the tendency to lose electrons easily forming cations.
- Non-metals have a tendency to gain electrons and form anions.
- In ionic bonding, a strong electrostatic force holds ions together.
- Ionic compounds are solids with high melting and boiling points.
- Covalent bonds among non-metals are weaker than ionic bonds.
- Ionic bonds are non-directional, but covalent bonds are formed in a particular direction.
- Covalent bonds formed between similar atoms are non-polar while between different atoms are polar.
- In covalent bonding single, double, or triple covalent bond is formed by sharing of one, two, or three electron pairs by the bonded atoms.
- A coordinate covalent bond is formed between electron pair donors and electron pair acceptors.
- The metallic bond is formed between metal atoms due to free electrons.
- In addition to chemical bonds, intermolecular forces of attraction exist between polar molecules.
- Hydrogen bonding exists between the hydrogen atom of one molecule and the highly electronegative atom of another molecule.
- Hydrogen bonds affect the physical properties of the compounds.
- The properties of the compounds depend upon the nature of bonding present in the compound.
- Ionic compounds are crystalline solids with high melting and boiling points.
- Covalent compounds exist in molecular form in three physical states.
- Polar and non-polar covalent compounds have different properties.
- Metals have shining surfaces. They are good conductors of electricity and are malleable and ductile.
- Why do atoms react?
- Why is the bond between an electropositive and an electronegative atom ionic in nature?
- Ionic compounds are solids. Justify.
- More electronegative elements can form bonds between themselves. Justify.
- Metals are good conductors of electricity. Why?
- Ionic compounds conduct electricity in solution or molten form. Why?
- What type of covalent bond is formed in nitrogen molecules?
- Differentiate between lone pair and bond pair of electrons.
- Describe at least two necessary conditions for the formation of a covalent bond.
- Why HC1 has dipole-dipole forces of attraction?
- What is a triple covalent bond, explain with an example.
- What is the difference between polar and non-polar covalent bonds, explain with one example of each.
- Why does a covalent bond become polar?
- What is the relationship between electronegativity and polarity?
- Why does ice float on water?
- Give the characteristic properties of ionic compounds.
- What characteristic properties do the covalent compound have?
Chemistry Chapter 4 Short Questions PDF Download
Students, here you will not find any PDF File of 9th Class Chemistry Chapter 4 Short Questions PDF Download Notes because we already described to you all the important Chemistry Chapter 4 Structure of Molecules short questions in the above section.
Conclusion
The topic of this post is 9th Class Chemistry Chapter 4 Short Questions Notes without any PDF file. We add this post to the 9th Class Chemistry Notes category where students can easily find the Short Questions type study solutions and much more that students need to be related to the Class 9 Chemistry Book.