Metals, Ionic and Covalent Substances Flashcards
1
Q
What are the metallic properties?
A
- High melting points
- High densities
- Good conductivities
- Malleable
- Ductile
2
Q
What is Metallic Bonding?
A
Tightly packed lattice of positively charged ions in a sea of delocalised electrons
3
Q
What is Ionic Bonding?
A
- Occurs between metals and non-metals
- Strong electrostatic attraction between oppositely charged ions
- Three dimensional lattice of alternating positive and negative ions
- Hard but brittle in a compound
- Solids are poor conductors until molten or dissolved
4
Q
What is Covalent Bonding?
A
- Non-Metal and Non-Metal
- No ions are formed, but electrons are shared
- Covalent bonds refer to the force of attraction formed when electrons are shared between atoms
5
Q
What are some characteristics of covalent molecular bonds?
A
- Covalent molecular - low-moderate boiling points and are poor conductors of electricity
