1. Bonding
Bonding

2. An ionic bond is formed when a metal atom and a non-metal atom combine
Ionic Bonding
An ionic bond is formed when a metal atom and a non-metal atom combine
The metal atom donates an electron to the non-metal atom
The metal atom becomes a positively charged ion, the non-metal atom becomes a negatively charged ion
The positive ion attracts the negative ion – an ionic bond
Ionic Bonding

3. Ionic Bonding
Ionic Bonding

4. Ionic Bonding
Ionic Bonding

5. Ionic bonding
Ionic Bonding

6. Ionic compounds cannot conduct electricity when solid
An ionic compound has a giant structure of ions (a giant ionic lattice)
The ionic bond is very strong – these substances have high melting and boiling points
Ionic compounds cannot conduct electricity when solid
When melted or dissolved in water the ions are free to move and the ionic compound can conduct electricity
Ionic compounds

7. Conduction of electricity

8. A covalent bond is one in which two atoms share two electrons
Covalent Bonding
Non-metal atoms can combine with other non-metal atoms by sharing their electrons
A covalent bond is one in which two atoms share two electrons
Covalent bonding

9. Covalent bonding
Covalent bonding

10. Covalent bonding
Covalent bonding

11. Covalent bonding
Covalent bonding

12. An atom that gains one or more electrons will have a ____________________ charge.
 An atom that loses one or more electrons will have a ____________________ charge.
 An atom that gains or loses one or more electrons is called an ____________.
 A positive ion is called a ______________ and a negative ion is called an _______________.
What is an ionic bond?
 Atoms will transfer one or more ___________________ to another to form the bond.
 Each atom is left with a ___________________ outer shell.
 An ionic bond forms between a ___________________ ion with a positive charge and a ___________________ ion with a negative charge.
What is a covalent bond?
 Atoms ___________________ one or more electrons with each other to form the bond.
 A covalent bond forms between two ___________________.

13. Bonding Quiz Aluminum + Oxygen Magnesium + Oxygen Hydrogen + Fluorine
Silicon + Hydrogen

14. Covalent bonding
Covalent bonding

15. Simple molecular compounds
Simple molecular compounds contain strong covalent bonds between atoms
However, there are weak forces between the molecules
Therefore, these compounds have low melting points and boiling points
The molecules do not carry an overall electric charge so these compounds do not conduct electricity
Simple molecular compounds

16. Simple molecular compounds

17. Giant covalent structures
Giant covalent structures contain strong covalent bonds between all atoms. Very high melting points.
In diamond, each carbon atom forms four covalent bonds
In graphite, each carbon atom forms three covalent bonds to form layers which can slide over each other. Free electrons in graphite allow it to conduct electricity.
Giant covalent structures

18. Diamond
Diamond

19. Graphite
Graphite

20. Metals have giant structures
Metallic Bonding
Metals have giant structures
Metals have delocalised electrons which are free to move. These electrons;
allow the metal to conduct heat and electricity
hold the structure together so metals have very high melting points
allow the atoms to slide over each other so metals can be shaped
Metallic Bonding

21. Metallic Bonding
Metallic Bonding

22. Metallic Bonding
Metallic Bonding

23. Bonding Summary
Bonding Summary

24. Wordsearch
Wordsearch

25. Quiz
Quiz