Unit 1- Properties Flashcards
Is carbon a conductor if electricity?
Yes
What is an electric current?
A flow of charged particles
Do metals conduct electricity?
Yes
Why can metals and carbon conduct electricity?
They contain free electrons
Do covalent substances conduct electricity?
No
Why can’t covalent substances conduct electricity?
They are made of molecules which are uncharged, neutral
Do ionic compounds conduct electricity?
They don’t in a solid state but they do conduct when dissolved in water or when molten
Why can’t ionic compounds conduct electricity in a solid state?
The ions are not free to move
Why can ionic compounds conduct electricity in an aqueous or molten state?
The ions are now free to move
Which bonding has high melting and boiling points?
Metallic bonds
Ionic compounds
Covalent network
Which bonding has a low boiling and melting points?
Discrete covalent bonds
Are ionic compounds insoluble or soluble?
Usually soluble
Can covalent substances dissolve in other solvents if it dissolves in water?
It may dissolve
