The document discusses covalent bonds, which are formed by the sharing of electrons between non-metal atoms. It outlines the properties of molecular compounds, such as their inability to conduct electricity and generally lower melting and boiling points compared to ionic compounds. It also explains the difference between nonpolar and polar covalent bonds based on the equality of electron sharing.

1. Covalent
(Molecular) Bonds
Grade 7 Chemistry
Mr. Johnston
Saigon South International School

2. Guiding Questions
1. How are atoms held together in a covalent
(molecular) bond?
2. What are the properties of molecular
(covalent) bond?
3. How do bonded atoms become partially
charged?

3. Key Vocabulary
Covalent Bonds
Molecule
Double Bond
Triple Bond
Molecular Compound
Non-Polar Bond
Polar Bond

4. Comparing Ionic and Covalent
Bonds
Additional Readings on Covalent Bonds

5. COVALENT
BONDbond formed by the sharing of
electrons between 2 non-metals

8. Part 1: How are atoms held
together in a covalent bond?

9. Covalent bonds- Two atoms share one or more pairs of outer-shell electrons.
Oxygen
Atom
Oxygen
Atom
Oxygen Molecule
(O)

11. What are the properties of of Molecular
compounds?
Unlike ionic compounds, molecular (covalent)
compounds do not usually conduct electricity,
when melted or dissolved in water. Also,
compared to ionic compounds, molecular
compounds generally have lower melting points
and boiling points”

12. NONPOLAR
COVALENT BONDS
when electrons are
shared equally
H2 or Cl2

13. POLAR COVALENT
BONDS
when electrons are
shared but shared
unequally
H2O

14. Way to remember a polar bond...
The stronger, more stable atom pulls harder!

15. Exit interview on infuse learning!