This is a hands-on lab activity about the composition of salt. Learners …
This is a hands-on lab activity about the composition of salt. Learners will explain the general relationship between an element's Periodic Table Group Number and its tendency to gain or lose electron(s), and explain the difference between molecular compounds and ionic compounds. They will then use household materials to build a model to demonstrate sodium chloride's cubic form and describe the nature of the electrostatic attraction that holds the structure of salt together. Background information, common preconceptions, a glossary and more is included. This activity is part of the Aquarius Hands-on Laboratory Activities.
Produce light by bombarding atoms with electrons. See how the characteristic spectra …
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.
Start a chain reaction, or introduce non-radioactive isotopes to prevent one. Control …
Start a chain reaction, or introduce non-radioactive isotopes to prevent one. Control energy production in a nuclear reactor! (Previously part of the Nuclear Physics simulation - now there are separate Alpha Decay and Nuclear Fission sims.)
Students conduct an experiment to determine how varying the composition of a …
Students conduct an experiment to determine how varying the composition of a construction material affects its strength. They make several adobe bricks with differing percentages of sand, soil, fibrous material and water. They test the bricks for strength by dropping them onto a concrete surface from progressively greater heights. Students graph the experiment results and use what they learn to design their own special mix that maximizes the bricks' strength. During the course of the experiment, students learn about variables (independent, dependent, control) and the steps of the engineering design process.
This webpage, one of NASA's fact sheets, describes the role of the …
This webpage, one of NASA's fact sheets, describes the role of the oceans, clouds, and aerosols in moderating climate, which has resulted in less-than-expected temperature increases as carbon dioxide levels have increased. It also describes the efforts of scientists to construct computer models to understand interactions between the atmosphere and ocean, and to perform space-based oceanography using the Earth Observing System (EOS). The site features text, pictures, and links to other relevant NASA sites.
The ocean and atmosphere continually exchange particles and gases in a kind …
The ocean and atmosphere continually exchange particles and gases in a kind of ongoing "dialogue" that influences regional and global climate. This site explains the chemical link between the ocean and atmosphere. Emphasis is on the ocean's ability to store and release water vapor and carbon dioxide, both of which contribute to the greenhouse effect. Features include text, a scientific illustration, and links to other relevant topics, data sets, and satellite missions.
Explore an active area of research in optical physics: producing designer pulse …
Explore an active area of research in optical physics: producing designer pulse shapes to achieve specific purposes, such as breaking apart a molecule. Carefully create the perfect shaped pulse to break apart a molecule by individually manipulating the colors of light that make up a pulse.
This 12-minute video lesson discusses acetic acid to acetyl chloride mechanism. They …
This 12-minute video lesson discusses acetic acid to acetyl chloride mechanism. They can be generalized to forming any acid halide from a carboxylic acid. [Organic Chemistry playlist: Lesson 69 of 73].
This 12-minute video lesson looks at Aldol Reaction. It is the final …
This 12-minute video lesson looks at Aldol Reaction. It is the final video in the Organic Chemistry playlist. [Organic Chemistry playlist: Lesson 73 of 73].
This 9-minute video lesson looks at carboxylic Aacid Derivatives: amides, anhydrides, esters …
This 9-minute video lesson looks at carboxylic Aacid Derivatives: amides, anhydrides, esters and acyl chlorides. [Organic Chemistry playlist: Lesson 70 of 73].
No restrictions on your remixing, redistributing, or making derivative works. Give credit to the author, as required.
Your remixing, redistributing, or making derivatives works comes with some restrictions, including how it is shared.
Your redistributing comes with some restrictions. Do not remix or make derivative works.
Most restrictive license type. Prohibits most uses, sharing, and any changes.
Copyrighted materials, available under Fair Use and the TEACH Act for US-based educators, or other custom arrangements. Go to the resource provider to see their individual restrictions.
