Current electricity is defined as we explore the relationship between voltage, current, and resistance. Ohm's law is introduced as well as the equation relating electric force and electric field.
We explore the steps involved in creating and testing a hypothesis and introduce our third Science and Engineering Practice, planning and carrying out an investigation.
In this segment, students learn about the importance of lab safety procedures while performing an experiment testing the pH of various samples in the classroom.
Students analyze data collected in the last segment and interpret that data by constructing an argument that explains whether the data shows that their hypothesis should be supported or rejected. Significant figures are mentioned and the importance of data replication is also discussed.
In this segment, students engage in argumentation by either rejecting or supporting their hypotheses about the fish kill. We hear from environmental lawyer Don Stack, who discusses the role of chemistry in his profession.
Our students continue their discussion of penny densities in this segment and begin a crushing experiment to examine the different physical properties of chemicals.
In this segment, we continue with our exploration of physical properties, including brittleness and malleability. We also learn about phase changes and observe a demonstration on the freezing point of water.
Dr. Adrian Elliott from the Fernbank Science Center joins us in this segment for a special interview, and our students discuss sublimation and deposition.