OCR UNIT 1: ELECTRONS, BONDING AND STRUCTURE all included
- Created by: carys ☺
- Created on: 14-05-13 15:16
Other questions in this quiz
2. What are three characteristics that ionic compounds have (when in a giant ionic structure)?
- high boiling point, always conducts electricity and cannot dissolve in water
- dissolve in water, low boiling point, can not conduct electricity
- conduct electricity when molten or dissolved, have high boiling points, dissolve in water
- always conducts electricity, low boiling point, cannot dissolve in water
3. What are Van Der Waals Forces?
- ionic attraction
- shared pair of electrons
- electrostatic attraction between temporary dipoles and induced dipoles caused by movement of electrons in atoms and molecules.
- any intermolecular force
4. What is the equation for the second ionisation of oxygen?
- O2- (g) -> O2+ (g) + H2O
- O+ (l) -> O2+ (g) + e- (s)
- O+ (g) -> O2+ (g) + e-
- O2+ (g) -> O3+ (g) + e-
5. What is the definition of the first ionisation energy?
- the ability to remove all the electrons from the outer shell in an exothermic process
- the energy needed to remove 1 electron from each atom in 1 mole of gaseous atoms to form one mole of gaseous 1+ ions.
- a high attraction between the electron and the nucleus
- the energy needed to remove 1 electron from each ion in 1 mole of gaseous 1+ ions to form one mole of gaseous 2+ ions.
Comments
No comments have yet been made