Bonding Flashcards
1
Q
What is an ion? How are ions formed?
A
- electrically charged atom or group of atoms
gain or loss of electrons
2
Q
what is ionic bonding?
A
strong electrostatic attraction between oppositely charged ions
3
Q
what is a covalent bond? How are they formed?
A
- strong attraction between bonding pair of electrons and nuclei of atoms
a shared pair of electrons between two atoms
4
Q
Why do simple molecular substances have low melting points?
A
weak forces of attraction
less energy required to break them
5
Q
What is a metal?
A
a giant structure of ions surrounded by a sea of delocalised electrons
6
Q
What is a metallic bond?
A
attraction between positive ions and delocalised electrons
7
Q
why is a metal ductile/malleable?
A
layers of ions can easily slide over each other
8
Q
why are metals good conductors of heat/electricity?
A
delocalised electrons free to move - carry a charge
