Chemical Reactions and Properties

What is a key feature of metallic bonds?

• Sharing of electrons

• Transfer of electrons

• Delocalisation of electrons

• Fixed position of electrons

Which of the following compounds is likely to have a covalent bond?

• NO₂

• NaCl

• MgBr₂

• CaO

What surrounds each cation in an ionic compound?

• Other cations

• Anions

• Neutrons

• Electrons

Which of the following is the correct formula for magnesium sulfide?

• MgS

• MgSO₄

• Mg₂S₃

• Mg₃(PO₄)₂

What is the formula for the hydroxide ion?

• OH^-

• NH₄⁺

• NO₃^-

• CO₃^2-

What is the charge on a nitride ion?

• 3-

• 2-

• 1-

• 0

What is the charge on an oxide ion?

• 2-

• 1-

• 3-

• 0

What is the formula for sodium nitrate?

• NaNO₂

• NaNO₃

• NaN

• NaN₃

Match the statements

• Calcium

• Compound formed when a sodium atom donates an electron to a chlorine atom

• ionic compound

• Metal

• covalent compound

• Ionic compound

• MgSO₄

• Covalent compound

• H₂O

• Compound formed when carbon shares its valence with 2 oxygen atoms