Chemical Bonding

Topic: Chemical Bonding

Objectives & Outcome:

• Students will be able to predict the properties of elements and compounds using the periodic table.
• Students will be able to identify the types of chemical bonds present in given molecules.

Materials

• Periodic table
• Molecules samples for analysis (e.g. H2O, CO2, NH3, etc.)
• Pairing sticks or popsicle sticks
• Pencils and paper for note-taking

Warm-up

• Start the lesson by asking students if they have ever played a game called "Spot the Element." This game involves passing around a periodic table and having students try and identify the element represented by a given symbol.
• As a class, discuss the importance of the periodic table in chemistry and the ways in which it can be used to predict the properties of elements and compounds.

Direct Instruction

• Introduce the concept of chemical bonding, explaining that this is the way in which atoms join together to form molecules.
• Using the periodic table, demonstrate how to predict the properties of elements and how they interact based on their position in the table (e.g. metals are found toward the left side of the table, non-metals toward the right).
• Discuss the different types of chemical bonds and the factors that influence their strength (e.g. ionic bonds are stronger than covalent bonds, and the more electron-rich the atoms involved in a bond, the stronger the bond).

Guided Practice

• Provide students with a scenario and have them apply their knowledge of chemical bonding to predict the properties of the elements involved. For example, give them a scenario involving a metal and a non-metal and have them predict the properties of the resulting molecule.
• Have students work in pairs to complete a similar exercise using the periodic table.

Independent Practice

• Provide students with a list of elemental properties and have them identify the elements involved using the periodic table. For example, give them a list of properties such as "liquid at room temperature", "colorless", and "tasteless" and have them identify the elements involved as copper, silver, and zinc, which have those properties.

Closure

• Review the main points of the lesson: the elements are grouped into periods and families according to their chemical properties, and the periodic table can be used to predict and identify elemental properties.

Assessment

• Observe the students during the independent practice activity to assess their understanding of the material and their ability to use the periodic table to predict and identify elemental properties.
• Collect the students' presentations and take a short quiz to assess their understanding of the material.