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Covers the concept of ratios and proportions, the correct way to express and write ratios and proportions, ratios and proportions in their simplest form, and comparing ratios and proportions. Provides real-life situations in which ratios and proportions would be applied, such as mixing paint, reading and interpreting map scales, and calculating map distances.
(Source: DCMP)
Solutions are classified as acidic or basic based on their hydrogen ion concentration relative to pure water. An acidic solution has a higher concentration of hydrogen ions, and a basic solution has a lower concentration of hydrogen ions. Other topics covered include chemical reaction basics, properties of acids and based, acid-base reactions, and other mixtures. Part of the "Chemistry" series.
A solution is a homogeneous mixture of two or more substances. It contains a solute and and solvent. Solubility is the maximum quantity of a solute that can be dissolved in a given amount of solvent at a specified temperature. Other topics covered include concentration, Raoult's law, colligative properties, and non-ideal behavior. Part of the "Chemistry" series.
Most people see a vegetable when they see a spinach leaf, but in this lab, they see the potential to create heart tissue. Students at Worcester Polytechnic Institute are training to be leaders in bioengineering, and they are thinking outside the box to develop practical, commercially viable technologies that fulfill critical unmet needs. Part of the "Science Nation" series.
Science laboratories present a whole range of potential hazards to people's health and well-being, and it is critical that both teachers and students are fully aware of their responsibilities to ensure the learning environment is kept safe at all times. Aims at viewers who are not new to science laboratories. Covers a range of safety areas, including general safety in these laboratories and specific areas of potential risk in chemistry, biology, and physics labs.
Part of a series that features a wide variety of video footage, photographs, diagrams and colorful, animated graphics and labels. Begins with a simple definition of the term and concludes with a critical thinking question. For this particular video, students will focus on the phases of matter. Part of the Science Video Vocab Series.
Host Peter Tonge visits the Weston Maple Sugar Project in Weston, Massachusetts. Shows the process of making maple syrup from tapping a maple sugar tree to boiling sap in a sugar shack. The second part of the program focuses on the basics of planning a garden in late winter. Also explains how to mix and apply liquid fertilizers. Originally aired as an episode of "The Good Green Earth."
The process known as the scientific method gives scientists a format for engaging in a step-by-step approach to come up with a reasonable solution to a proposed hypothesis. It is important for students to understand and use the scientific method when solving problems and answering questions. This program identifies the steps of the scientific method and provides real-world examples of the scientific method being used to solve everyday problems. Part of the "Real World Science" series.
Since the beginning of time, humans have used chemical reactions without understanding them. For example, ancient Greek artisans were able to smelt metal, dye fabrics, and make glass. The attempt to transform simple metal into gold and silver was known as alchemy (the forerunner of chemistry as we know it today). By mixing elements, alchemists created chemical reactions which produced new compounds. While alchemists were never able to transform anything into gold or silver, their trails helped shape the science of chemistry. Part of Chemistry: Solved by Sherlock Olmos Series.
The seafloor has a diverse landscape, which includes underwater lakes and rivers. How is that possible? Well, these lakes and rivers form when seawater seeps up through thick layers of salt, which are present beneath the seafloor. As the water seeps up, it dissolves the salt layer, causing it to collapse and form depressions. The dissolved salt makes the water denser, and because it is denser than the water around it, it will settle into the depressions, forming a river or lake. Part of the "Deep Sea Dive" series.
In this episode, host Dianna Cowern meets with math experts to discuss the phenomenon of "wine tears." They conduct experiments with various types of liquids to try and uncover the science behind this mystery. Part of the "Physics Girl" series. Please note this title uses alcoholic beverages as the basis for the experiments.
New discoveries regarding the Outer Planets are creating a fundamental rethinking of our solar system. Uranus is a toxic combination of hydrogen, helium and methane. Scientists speculate that the planet was knocked on its side after colliding with another body. Neptune's largest moon, Triton, is cold and barren, but some scientists speculate that liquid water might exist under Triton's icy surface. Cold and inhospitable, Pluto completes one orbit around the solar system every 248 years. Cutting-edge computer graphics are used to bring the universe down to earth to show what life would be like on other planets, and to imagine what kind of life forms might evolve in alien atmospheres.
Typically, diesel fuel is made from crude oil, but scientists can make high-grade diesel from coal, natural gas, plants, or even agricultural waste, using a process called Fischer–Tropsch (FT). FT Diesel is the ideal liquid transportation fuel for automobiles, trucks, and jets. It’s much cleaner burning than conventional diesel, and much more energy-efficient than gasoline. But, FT Diesel is expensive to make and generates lots of waste. With support from the National Science Foundation and its Center for Enabling New Technologies through Catalysis (CENTC), chemists around the United States are working together to improve the cost and energy efficiency of alternative fuels. Part of the National Science Foundation Series “Science Nation.”
The freezing and melting of water affects so much of the world. Ice crystals in thunderclouds create lightning. It is also powerful enough to crack boulders, float stones, and alter entire landscapes. Ice is a common substance, but it has some secrets and weird properties scientists have only just begun to understand. Part of the "It's Okay to Be Smart" series.
Pollution is waste material produced from human activities. It impacts the environment in a negative way. Explores how pollution can affect the air, water, and land in the form of gases, liquids, and solids. Substances that constitute pollution in the environment include: greenhouse gases (CO2, smog, and industrial emissions), oil, blue/green algae, plastic, litter, dog poop, and fertilizer. Also explores how a sustainable future depends upon individuals and society minimizing pollution by making informed and responsible decisions when choosing consumer items.
Moko is an explorer. As he travels the world continent by continent, he makes many friends and discovers many natural phenomena which sometimes delight him, and other times scare him. Each animated episode recounts an adventure and takes an "original story" approach to explaining these natural phenomena. In this episode, on that morning, Moko decides it is time to leave this place and continue on his quest for the end of the world. Alarick offers him his boat and Moko takes off. Nightfalls and daylight seems to never return. As he advances on the waves of the dark ocean, his boat gets stuck in the sea ice. Moko thinks that this country is refusing to let him leave. He pleads for daylight to return and for the ice to melt by playing the flute Alarick gave him. The ice melts, his boat is freed and he carries on his voyage as the sun rises ahead of him. Moko discovers a new land in the horizon.
Showing collections 1 to 3 of 3
A collection of Chemistry related resources
A collection containing 67 resources, curated by Benetech
3D models and images of the entire periodic table of elements
A collection containing 118 resources, curated by Library Lyna
A collection of simulations from PhET.
A collection containing 15 resources, curated by Charles LaPierre
