This is the second lesson in the Human Anatomy & Physiology Fundamentals of Chemistry section. This video covers the atom, as well as the proton, neutron and electron.
Pump gas molecules to a box and see what happens as you change the volume, add or remove heat, change gravity, and more. Measure the temperature and pressure, and discover how the properties of the gas vary in relation to each other.
Generate electricity with a bar magnet! Discover the physics behind the phenomena by exploring magnets and how you can use them to make a bulb light.
This simple geometric shapes activity for kids is easy to do at home or as a math center in school. It also makes a terrific STEAM project including a bit of art and design too. Learn by doing, creating, discovering, and exploring with a simple, fun geometry activity.
Check out the long list of activities on the Little Bins Little Hands site that include STEM Challenges; free printables; indoor fun ideas; STEM at home projects; free math worksheets; distance learning activities; LEGO activities; STEM activities for physics, chemistry, edible science experiments, the scientific method, oceans, weather, space, and outdoors; all kinds of slime activities; and activities for different seasons.
Forest fires, brush fires, and slash and burn agriculture are a significant force for environmental change. Remote sensing of fires, smoke and burn scars allows for improved detection of fire characteristics as well as their short- and long-term effects on ecosystems. This site from NASA's Earth Observatory discusses the importance of fires, trace gases emissions, aerosol emissions, and NASA and NOAA missions for monitoring global fires. Case studies and data sets are also available.
This article provides a brief discussion of the issues surrounding global warming. Topics include greenhouse gas emissions, the possible consequences of global warming, and debates among proponents and opponents about whether global warming is indeed happening and whether it represents a danger to the planet.
In this activity, students work in groups to create a presentation that illustrates the meaning of the statement "To make an apple pie from scratch you must first invent the universe." Students pick an element that can be found in apple pie and trace its evolutionary history back to the birth of the universe itself. They also share their vision of the environment in which that element may find itself 5 or so billion years from now after the Earth is long gone. Presentations are intended to demonstrate student understanding of the origins and life cycle of matter, so this activity is appropriate as a conclusion to a unit. This activity is part of the "What is Your Cosmic Connection to the Elements" information and activity booklet. The booklet includes teacher notes, grading guide and student handouts.
This is a lesson about visual spectra. Learners will explore different ways of displaying visual spectra, including colored "barcode" spectra, like those produced by a diffraction grating, and line plots displaying intensity versus color, or wavelength. Students learn that a diffraction grating acts like a prism, bending light into its component colors. The activity is part of Project Spectra, a science and engineering program for middle-high school students, focusing on how light is used to explore the Solar System.
How do greenhouse gases affect the climate? Explore the atmosphere during the ice age and today. What happens when you add clouds? Change the greenhouse gas concentration and see how the temperature changes. Then compare to the effect of glass panes. Zoom in and see how light interacts with molecules. Do all atmospheric gases contribute to the greenhouse effect?
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In the first video segment, we present a cartoon model of a weighted chain, which can be regarded as an approximation for a polymer under tension (e.g. a strand of DNA being stretched out using optical tweezers). The Hamiltonian and partition function for this system are described in the second segment. Finally, in the third segment, we calculate the average energy and elongation of the chain.
Students continue the research begun in the associated lesson as if they were biomedical engineers working for a pharmaceutical company. Groups each perform a simple chemical reaction (to precipitate solid calcium out of solution) to observe what may occur when Osteopontin levels drop in the body. With this additional research, students determine potential health complications that might arise from a new drug that could reduce inflammatory pain in many patients, improving their quality of life. The goal of this activity is to illustrate biomedical engineering as medical problem solving, as well as emphasize the importance of maintaining normal body chemistry.
This ChemMatters article provides a brief background on smog, then examines the causes of it, efforts to reduce it, and methods used to measure it. ChemMatters is an educational magazine for high school students.
This textbook is designed for a 10-week, introduction to general chemistry. The text focuses mainly on chemical structure, though chemical reactivity and quantitation are also covered.
Are all atoms of an element the same? How can you tell one isotope from another? Use the sim to learn about isotopes and how abundance relates to the average atomic mass of an element.
Welcome to It's Elemental - Balancing Act! The computer will give you a number of incomplete chemical equations. Balance the chemical equations by selecting coefficients from the pull-down menus. Once you think the equation is balanced, press the 'Check my answer!' button. Have fun and good luck!
Just how small are atoms? And what's inside them? The answers turn out to be astounding, even for those who think they know. This fast-paced animation uses spectacular metaphors (imagine a blueberry the size of a football stadium!) to give a visceral sense of the building blocks that make our world. A quiz, thought provoking question, and links for further study are provided to create a lesson around the 5-minute video. Educators may use the platform to easily "Flip" or create their own lesson for use with their students of any age or level.
Through two lessons and five activities, students explore the structure and function of cell membranes. Specific transport functions, including active and passive transport, are presented. In the legacy cycle tradition, students are motivated with a Grand Challenge question. As they study the ingress and egress of particles through membranes, students learn about quantum dots and biotechnology through the concept of intracellular engineering.
Create a laser by pumping the chamber with a photon beam. Manage the energy states of the laser's atoms to control its output.
This lab lets students experiment with some of the conditions that might influence a chemical equilibrium. It is suitable for students in chemistry 30. Students will need a good understanding of lab procedure and lab safety protocols. Factors tested include addition and removal of reactants or products, and the effect of addition of a common ion.
Note there are several important safety considerations that go with this lab, so teachers should be familiar with it and have safety procedures in place before proceeding with students.