Oquizy

What type of particles are present in a metallic lattice?

Metal atoms Molecules Neutral atoms Positive ions and free electrons

What type of bonding is found in sodium chloride (NaCl)?

Covalent Hydrogen Ionic Metallic

A student draws the dot-and-cross diagram for MgCl₂. Which statement is correct about the ions formed?

Both Mg and Cl share electrons equally Cl gains one electron and becomes Cl⁺ Mg gains two electrons and becomes Mg²⁻ Mg loses two electrons and each Cl gains one

A student observes that silicon dioxide (SiO₂) has a very high melting point and does not conduct electricity. What can be deduced about its bonding and structure?

It contains metal ions It has giant ionic structure It is a giant covalent structure It is a simple molecular compound

Which of the following contains metallic bonding?

Carbon dioxide Sodium Sodium chloride Water

How many covalent bonds are formed in a methane molecule (CH₄)?

2 3 4 5

Which of these substances is composed of a giant covalent structure?

Ammonia Carbon dioxide Diamond Iodine

Brass is harder than pure copper. Which statement best explains why?

Brass contains only small atoms Brass has stronger bonds between atoms Brass is a compound The different-sized atoms in brass distort the layers

What type of bond is formed when atoms share electrons?

Covalent Hydrogen Ionic Metallic

Which particle is responsible for electrical conductivity in metals?

Delocalised electrons Ions Molecules Protons

What is a common physical property of giant covalent structures?

Conduct electricity High melting point Low melting point Soft texture

Quiz: Chemistry - Chemical Bonding