Lesson 3: Chemical Bonds
Overview:
In this lesson we will learn more about the invisible glue that holds atoms and molecules together. There will be an emphasis on electronegativity and how we can use the differences of the electronegativity values of each atom to determine the type of bond.
Curriculum Expectations:
Overall Expectations:
B2. Investigate physical and chemical properties of elements and compounds, and use various methods to visually represent them.
B3. Demonstrate an understanding of periodic trends in the periodic table and how elements combine to form chemical bonds.
Specific Expectations:
B2.1 Use appropriate terminology related to chemical trends and chemical bonding, including but not limited to: electronegativity, and electron affinity.
B2.3 Use an inquiry process to investigate the chemical reactions of elements (e.g., metals, non-metals) with other substances (e.g., oxygen, acids, water), and produce an activity series using the resulting data.
B2.4 Draw Lewis structures to represent the bonds in ionic and molecular compounds.
B2.5 Predict the nature of a bond (e.g., non-polar covalent, polar covalent, ionic), using electronegativity values of atoms.
B3.4 Explain the differences between the formation of ionic bonds and the formation of covalent bonds.
B2. Investigate physical and chemical properties of elements and compounds, and use various methods to visually represent them.
B3. Demonstrate an understanding of periodic trends in the periodic table and how elements combine to form chemical bonds.
Specific Expectations:
B2.1 Use appropriate terminology related to chemical trends and chemical bonding, including but not limited to: electronegativity, and electron affinity.
B2.3 Use an inquiry process to investigate the chemical reactions of elements (e.g., metals, non-metals) with other substances (e.g., oxygen, acids, water), and produce an activity series using the resulting data.
B2.4 Draw Lewis structures to represent the bonds in ionic and molecular compounds.
B2.5 Predict the nature of a bond (e.g., non-polar covalent, polar covalent, ionic), using electronegativity values of atoms.
B3.4 Explain the differences between the formation of ionic bonds and the formation of covalent bonds.
Success Criteria:
Time Allocation: 3 hours
Learning Activities:
Read Nelson 2.1 - Ionic Compounds
Read Nelson 2.2 - Molecular Elements and Compounds
Read Nelson 2.3 - Chemical Bonding and Electronegativity
Read Nelson 2.2 - Molecular Elements and Compounds
Read Nelson 2.3 - Chemical Bonding and Electronegativity
|
Ionic Bonding
This interactive activity from ChemThink discusses ionic bonding—a type of chemical bond formed between two ions with opposite charges. Investigate how the transfer of electrons between atoms creates ions and how the mutual attraction of these charged particles forms ionic bonds. Also learn about trends in the periodic table of elements, and explore how the structure of an ionic compound relates to its formula. |
|
|
Covalent Bonding
This interactive activity from ChemThink describes covalent bonding—a type of chemical bond that involves the sharing of electrons. Investigate the attractive and repulsive forces that act on atomic particles and how the sharing of electrons can keep atoms together. See how two hydrogen atoms interact with each other to create a covalent bond. Learn about trends in the periodic table and how electrostatic potential energy determines the bond length. Also, learn about naming conventions for covalent compounds. Follow the instructions closely as you move through this activity! There are some screens where you have to do something before you can move onto the following screen. |
|
In the playlist below, video:
Task:
Solve questions 1, 2, 3, 4, 5, 6 and 7 from Nelson 2.1 Review on page 60.
Solve questions 1, 2, 4 and 5 from Nelson 2.2 Review on page 69.
Solve questions 1, 2, 3, 4, 5, 6 and 7 from Nelson 2.3 Review on page 73.
Solve questions 1, 2, 4 and 5 from Nelson 2.2 Review on page 69.
Solve questions 1, 2, 3, 4, 5, 6 and 7 from Nelson 2.3 Review on page 73.
