Covalent Substances Flashcards
1
Q
What are ‘Simple Molecular Covalent Substances’?
A
- They include gases such as hydrogen, methane, oxygen and carbon dioxide, and liquids such as water.
2
Q
What are the properties of simple molecular?
A
- These substances have low melting melting and boiling points because they are only weak forces between neighbouring molecules.
3
Q
Why are simple molecular poor conductors of electricity?
A
- As the atoms in a simple molecular covalent molecules have not lost or gained electrons
4
Q
How can giant molecular be formed?
A
- Some covalent compounds form giant
5
Q
Describe what giant molecular covalent substances consist of
A
- Billions of atoms all joined together by covalent bonds
6
Q
What are the properties of giant molecular covalent substances and why?
A
- Most have high melting and boiling points as all atoms are joined to other atoms by strong covalent bonds and a lot of heat energy is needed to break these bonds
