Students use a simple pH indicator to measure how much CO2 is produced during respiration, at rest and after exercising. They begin by comparing some common household solutions in order to determine the color change of the indicator. They review the concepts of pH and respiration and extend their knowledge to measuring the effectiveness of bioremediation in the environment.

Using Balmer-Rydberg equation to solve for photon energy for n=3 to 2 transition. Solving for wavelength of a line in UV region of hydrogen emission spectrum. Created by Jay.

Students learn about the periodic table and how pervasive the elements are in our daily lives. After reviewing the table organization and facts about the first 20 elements, they play an element identification game. They also learn that engineers incorporate these elements into the design of new products and processes. Acting as computer and animation engineers, students creatively express their new knowledge by creating a superhero character based on of the elements they now know so well. They will then pair with another superhero and create a dynamic duo out of the two elements, which will represent a molecule.

Hands on Chemistry is a resource designed for use in traditional, online, and blended high school Chemistry classrooms. It was developed by Blue Ridge PBS in collaboration with Virtual Virginia. In this video, Chemistry teacher Fred Mitchell demonstrates the structure of atoms using simple models.

Keywords: shapes of atoms, electrons, elements, linear structure, sulfur dioxide, H2O, Hydrogen, Oxygen, lone pair, Ammonia, Nitrogen, Hydrogen, Sulfur Trioxide, trigonal planar, Methane, Carbon, tetrahedral, Phosphorous Pentachloride, trigonal bipyramidal

Meets VA SOL CH.3

Hands on Chemistry is a resource designed for use in traditional, online, and blended high school Chemistry classrooms. It was developed by Blue Ridge PBS in collaboration with Virtual Virginia. In this video, Chemistry teacher Fred Mitchell demonstrates single displacement reaction using Magnesium and Hydrochloric Acid.

Keywords: single displacement reaction, Hydrochloric Acid, Hydrogen, Magnesium Chloride, limiting reactant

Meets VA SOL: CH.3

This lab exercise exposes students to a potentially new alternative energy source hydrogen gas. Student teams are given a hydrogen generator and an oxygen generator. They balance the chemical equation for the combustion of hydrogen gas in the presence of oxygen. Then they analyze what the equation really means. Two hypotheses are given, based on what one might predict upon analyzing the chemical equation. Once students have thought about the process, they are walked through the experiment and shown how to collect the gas in different ratios. By trial and error, students determine the ideal combustion ratio. For both volume of explosion and kick generated by explosion, they qualitatively record results on a 0-4 scale. Then, students evaluate their collected results to see if the hypotheses were correct and how their results match the theoretical equation. Students learn that while hydrogen will most commonly be used for fuel cells (no combustion situation), it has been used in rocket engines (for which a tremendous combustion occurs).

Video Description:  Engineering design and technology development support scientific discovery. Learn about the roles engineers and scientists play when working together on NASA missions like the James Webb Space Telescope and how science and engineering take turns pushing each other to move exploration forward.  Video Length:  4:16.NASA eClipsTM is a suite of online student-centered, standards-based resources that support instruction by increasing STEM literacy in formal and nonformal settings.  These free digital and downloadable resources inform and engage students through NASA-inspired, real-world connections.NASA eClips Launchpad videos focus on NASA innovations and the technology that take us into the future.  These segments support project-based and problem-based learning experiences in science, mathematics, and career and technical education classrooms.

Video Description:  Each of us is made from star stuff. But how are stars formed? Take a closer look at the life cycles of stars and learn where stars come from, how they change, and what happens to stars when their lives come to an end. Find out about your connection to the cosmos.  Video Length:  6:00.NASA eClipsTM is a suite of online student-centered, standards-based resources that support instruction by increasing STEM literacy in formal and nonformal settings.  These free digital and downloadable resources inform and engage students through NASA-inspired, real-world connections.NASA eClips Launchpad videos focus on NASA innovations and the technology that take us into the future.  These segments support project-based and problem-based learning experiences in science, mathematics, and career and technical education classrooms.

Produce light by bombarding atoms with electrons. See how the characteristic spectra of different elements are produced, and configure your own element's energy states to produce light of different colors.

Through this lab, students are introduced to energy sciences as they explore redox reactions and how hydrogen fuel cells turn the energy released when hydrogen and oxygen are combined into electrical energy that can be read on a standard multimeter. They learn about the energy stored in bonds and how, by controlling the reaction, this energy can be turned into more or less useful forms.

Looking at transportation and the environment, students learn that some human-made creations, such as vehicles, can harm the environment. They also learn about alternative fuels and vehicles designed by engineers to minimize pollution. The associated hands-on activity gives students a chance to design their own eco-friendly vehicle.