Topic 2.6 Properties of Ionic, Covalent, and Metallic Bonds

Properties of Ionic and Covalent Compounds

Multiple Choice

Ionic Compounds are made of...

• Two metals

• Two Non-metals

• A metal and a nonmetal

Multiple Choice

The particles in ionic compounds are called...

• ions
• atoms
• molecules

Multiple Choice

In ionic compounds, electrons are....

• shared
• transferred

Categorize

Options (12)

KCl

CaCO₃

CsBr

CCl₄

SiO₂

CO₂

Calcium (Ca)

Aluminum (Al)

Antimony (Sb)

HNO₃

H₃PO₄

HClO

Organize these options into the right categories

Ionic Compound

Covalent Compound

Metals

Acid

Multiple Choice

The particles in covalent compounds are called...

• atoms
• ions
• molecules

Multiple Choice

Covalent compounds are made of...

• nonmetal atoms
• ionic bonds
• metal atoms

Multiple Choice

In covalent compounds, electrons are...

• shared
• transferred

​Ionic compounds have very strong bonds. This causes ionic compounds to have high melting points and boiling points

​​Strong bonds

​Ionic compounds are made of ions. When you dissolve ionic compounds in water, the ions become mobile and can conduct an electric current

​​Conductive

​Ionic compounds have a crystal lattice structure and are generally solid at room temperature. Think about table salt!

​​Crystalline

IONIC COMPOUNDS

Multiple Choice

Ionic compounds have relatively high melting and boilng points because ...

• Weak electrostatic forces of attraction between ions

• Ionic compounds do not have any forces of attraction between ions
• Ionic compounds have low melting and boiling points
• Strong electrostatic forces of attraction between ions

Multiple Choice

What do ionic compounds do when they dissolve into water?

• Ionic compounds combine with water molecules
• Ionic compounds form covalent bonds with water molecules
• Ionic compounds dissociate into ions
• Ionic compounds evaporate into the air

Multiple Choice

When ionic compounds dissolve in water they allow the water to conduct a current (they are electrolytes). Why do aqueous solutions of ionic compounds conduct a current?

• The ionic compounds release electrons into the water, creating a current.
• The ions in the solution are free to move and carry an electric charge.
• The water molecules in the solution carry an electric charge.
• The ions in the solution are attracted to each other and form a solid barrier.

Covalent compounds have weaker bonds ionic compounds. This causes covalent compounds to have low melting points and low boiling points

​​Weak bonds

​Ionic compounds are not made of but are composed of atoms. When you dissolve covalent compounds in water they DO NOT dissociate into ions and therefore, do not conduct a current.

​​Conductive

​Covalent compounds have a Lewis Structures that show their arrangement. They are generally solids, liquids and gases and room temperature. If a solid then dull and brittle

COVALENT COMPOUNDS

Multiple Choice

At the beginning of the unit we discussed properties of metals. Why are metals excellent conductors of electricity?

• Metals have free electrons that can move easily through the metal lattice.
• Metals have a high resistance to electricity.
• Metals have positive charges that attract electrons.
• Metals have insulating properties that prevent the flow of electricity.

Multiple Choice

Why do covalent compounds not conduct a current?

• Covalent compounds do not conduct a current because they have a low melting point.
• Covalent compounds do not conduct a current because they are not soluble in water.
• Covalent compounds do not conduct a current because there are no free ions or charged particles to carry the current.
• Covalent compounds do not conduct a current because they have a high electrical resistance.

Multiple Choice

A substance that can conduct a current in solution due to moving ions contains what type of bonding?

• ionic
• covalent
• metallic
• polar