SGBIS IGCSE Double Science C1 Principles of Chemistry

Q1. What type of bond involves the swapping of electrons?

• Ionic
• Covalent
• Metallic

Q2. What type of bond involves the sharing of electrons?

• Ionic
• Covalent
• Metallic

Q3. What type of bond is represented by the diagram, below?

• Ionic
• Covalent
• Metallic

Q4. What is the formula for the molecule shown in the diagram, below?

• H₂O
• 2HO
• (OH)₂

Q5. Use the diagram to deduce how many electrons an oxygen atom has in its outer shell. (Write your answer as a digit e.g. 2)

Q6. What kind of bond is represented by the diagram, below?

• Ionic
• Covalent
• Metallic

Q7. Does a sodium atom gain or lose an electron when forming a bond with chlorine?

• Gain
• Lose

Q8. Does a chlorine atom gain or lose an electron when forming a bond with sodium?

• Gain
• Lose

Q9. What is the name given to an atom that gains or loses an electron(s)?

Q10. What is the name of the special force that forms the ionic bond between these two ions?

• Gravitational
• Electrostatic
• Electrochemical
• Electromagnetic