Unit 1- Bonding Flashcards
Can atoms achieve a stable electron arrangement by forming bonds?
Yes
What are atoms held together by?
Bonds
What happens to an atoms electrons in a covalent bond?
It shares pairs of electrons in order to achieve a stable electron arrangement
What is a covalent bond a result of?
2 positive nuclei being held together by their common attraction for the shared pair of electrons
Are covalent bonds strong or weak?
Strong
What do covalent bonds make?
Bigger groups of atoms called molecules
What charge does a molecule have?
Neutral
If atoms are in a covalent bond do you conduct electricity?
No
How are polar covalent bonds formed?
When the attraction of the atoms for the bonded electrons are different
How are the electrons shared in a polar covalent bond?
Unequally
Are covalent bonds in water polar?
Yes, they are highly polar
When are ionic compounds usually formed?
When metals and non-metals combine
How are positive ions formed?
By metal atoms losing electrons
How are negative ions formed?
Non-metal atoms gaining electrons
How do atoms achieve a stable electron arrangement?
Losing or gaining electrons
Why is ionic bonding?
An electrostatic force of attraction between oppositely charged ions
What structure is ionicly bonded compounds in?
A ionic lattice
What does a metallic structure consist of?
A giant lattice of positively charged ions and delocalised electrons
How is metallic bonding caused?
The electrostatic force of attraction between the positive ions and the negative delocalised electrons
Does a metallic bond have a strong or weak bond
Strong
Does metallic bonding have a low or high boiling and melting points?
High
Are metallic bonds conductors?
Yes
Why can metals conduct electricity?
They contain free electrons and the electrons are free to move
