Ionic and Covalent Bonding

What are ions formed from?

• Atoms breaking apart

• Atoms sharing electrons

• Atoms losing or gaining electrons

• Atoms losing or gaining protons

What does a sodium atom form when it loses an electron?

• A sodium 1+ ion

• A sodium 1- ion

• A sodium atom remains unchanged

• A sodium 2+ ion

What is the charge of a chloride ion?

• 2-

• 2+

• 1+

• 1-

What type of bond is formed between ions with opposite charges?

• Ionic bond

• Hydrogen bond

• Covalent bond

• Metallic bond

In dot and cross diagrams, what does the use of dots and crosses represent?

• Nuclei of atoms

• Positive and negative charges

• Protons and neutrons

• Electrons from different atoms

What is the purpose of showing the movement of electrons with an arrow in dot and cross diagrams?

• To show which atom the electron is moving to

• To represent the creation of ions

• To indicate the direction of ionic bonding

• All of the above

How many electrons does magnesium want to get rid of to achieve a full outer shell?

• 2 electrons

• 3 electrons

• 4 electrons

• 1 electron

What is the final charge of magnesium after it loses electrons to chlorine in the formation of magnesium chloride?

• 1+

• 2+

• 2-

• 1-

How are ions arranged in dot and cross diagrams involving more than two ions?

• In a straight line

• In a circular pattern

• Randomly

• Like they would be in a real compound