Covalent Substances Flashcards
How strong are the covenant bonds between atoms in a atoms in a small molecule?
Very strong
How strong are the forces of attraction between simple molecules?
Very weak
Why do simple molecules have very low melting and boiling points?
Because the intermolecular forces are so weak meaning the particles are easily parted
What state are simple molecules often at room temperature?
Gases or liquids
Who do molecular substances not conduct electricity?
Because there are no ions so there is no electrical charge
What is ten difference between giant covalent structures and giant lattices?
Giant covalent structures have no charged ions
How strong are the covalent bonds which bond all the atoms together?
Very strong
What properties do giant covalent structures have?
Very high melting and boiling points
Do giant covalent structures conduct electricity?
No (apart from graphite)
What are the two main examples of giant covalent structures?
Diamond and graphite
What are the two types of covalent substances?
Simple molecules or giant structure
