Bonding Basics

Multiple Choice

Which of the following best describes a chemical compound?

• A substance made of only one element

• A substance formed by the chemical combination of two or more elements

• A mixture of different substances

• A single atom with no bonds

Open Ended

• Why are the noble gases considered “stable” and unreactive?

Hotspot

Which atoms are reactive?

Open Ended

Explain how the octet rule influences the formation of chemical bonds between atoms.

Labelling

Lable the sections of the periodic table:

Drag labels to their correct position on the image

nonmetals

metals

Multiple Choice

Which type of ion is formed when an atom loses electrons?

• Cation

• Anion

• Isotope

• Molecule

Labelling

Identify the correct Oxidation Number (ionic charge!)

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-3

+3

-5

+5

-2

+2

Multiple Choice

What will be the oxidation number for the lithium ion?

• +1

• -1

Multiple Select

Select the 3 correct statements about the lithium ion formation based on the diagram and explanation provided.

• Lithium will lose 1 electron to become stable.

• Lithium forms a cation.

• Lithium will gain 1 electron to become stable.

• The oxidation number for lithium ion is 1+.

Multiple Choice

What will be the oxidation number for the nitrogen ion?

• +5

• -5

• +3

• -3

Multiple Select

Which 3 of the following statements about ionic bonds are correct?

• Ionic bonds form only between metals and nonmetals.

• Electrons are transferred from one atom to another in ionic bonds.

• Ionic bonds involve sharing of electrons.

• Atoms become charged ions after gaining or losing electrons.

Multiple Choice

Which of the following atoms have a full outer electron shell?

• Helium, Neon, Argon, Krypton

• Magnesium, Titanium, Lithium

• Sodium, Chlorine, Potassium

• Hydrogen, Oxygen, Nitrogen

Multiple Choice

Based on the periodic table, which group of elements is generally unreactive and why?

• Group 1, because they have one valence electron.

• Group 8A (noble gases), because they have full outer electron shells.

• Group 2, because they are metals.

• Group 7A, because they are halogens.

Multiple Choice

What is the main difference between metallic, ionic, and covalent bonds in terms of electron movement or sharing?

• Metallic bonds have free moving electrons, ionic bonds transfer electrons, and covalent bonds share electrons.

• Metallic bonds share electrons, ionic bonds have free moving electrons, and covalent bonds transfer electrons.

• Metallic bonds transfer electrons, ionic bonds share electrons, and covalent bonds have free moving electrons.

• All three types of bonds involve only sharing of electrons.

Multiple Choice

What happens to an atom when it gives away (transfers) an electron?

• It becomes a cation (positive ion)

• It becomes an anion (negative ion)

• It becomes neutral

• It gains energy