IGCSE structure and bonding

What is the name for a fixed number of atoms joined together by covalent bonds?

(a)  

What is the electron configuration of a fluoride ion?

• 2,7

• 9

• 2,8

• 10

Non-metal atoms become ions by _______ electrons

• Receiving

• Giving away

Metal atoms become ions by (a)   electrons

An ionic bond is the strong _____________ __________ between a positive ion and a negative ion

(a)  

Which of these are ionic compounds?

• MgO

• SiO₂

• LiF

• CO₂

Which of these are giant covalent structures?

• CO₂

• SiO₂

• Graphite

• Buckminsterfullerene

The structure of an ionic compound is a giant 3D ionic l (a)   with a regular arrangement of alternating positive and negative ions held together by the electrostatic force of attraction.

What must you do to sublime diamond? (Select two words.)

• Break

• Bonds

• Overcome

• Intermolecular forces of attraction

What must you do to sublime carbon dioxide? (Select two words.)

• Break

• Bonds

• Overcome

• Intermolecular forces of attraction