In this segment, the students learn about solubility, insolubility, and saturated solutions. They interpret the data they compiled during the lab on dissolving salts. In the classroom, the teacher tests several solutions, and they discuss the nature of chemical solutions.
Our host describes ways to express solution concentration. The class learns about mass percent and the students propose plans for creating solutions with a known molarity.
The students perform the dilution lab and discuss their results to understand how to make a concentrated solution more dilute using target volume and concentration, as well as accurate calculations.
The host discusses two of the colligative properties, freezing point depression and boiling point elevation. The students make ice cream to investigate colligative properties and solve problems to find the freezing point and boiling point of different substances.
In segment G, our host introduces acids and bases, two types of solutions made of chemical compounds. In the classroom, the students and teacher investigate the properties of acids and bases and test household substances with cabbage juice to see if they are an acid or a base.
The students use litmus paper to determine the acidity of different substances and discuss the Bronsted-Lowry Model, the Arrhenius Model, and the Lewis Model. They measure the pH of different substances in water.
In this segment, the students discuss the data from their titration lab. Our host explains the importance of titration in real world applications and discusses auto ionization of water and the calculation of pH.
The students explain how they calculated the pH of the acid used in the titration lab. The host explains how important the concepts in this unit are to chemistry.
The first segment in this unit looks at the laws of thermodynamics. The students examine heat-related phenomena of chemical thermodynamics using hot and cold packets, illustrating how thermodynamics work in the real world.
In segment C, students learn about thermal conductivity and specific heat capacity and see if their predictions for how fast the ice cubes melt were correct.
The teacher and students discuss the data gathered from the greenhouse gases experiment from segment C. An expert from Georgia Power explains how the company uses a device called a calorimeter to measure energy obtained from coal.
In segment F, the students complete the design and engineering task of making hot and cold packs. They draw conclusions about what compounds they can use to create the packs based on their observations and the data they compiled.