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52

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  • Water Molecule

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    • 2.5D Tactile Graphic
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    • Text Document
    In the first image, an oxygen atom is shown with six valence electrons. Four of these valence electrons form pairs at the top and right sides of the valence shell. The other two electrons are alone on the bottom and left sides. A hydrogen atom sits next to each the lone electron of the oxygen. Each hydrogen has only one valence electron. An arrow indicates that a reaction takes place. After the reaction, in the second image, each unpaired electron in the oxygen joins an electron from one of the hydrogen atoms so that the valence rings are now connected together. The bond that forms between oxygen and hydrogen can also be represented by a dash.

    Figure 2.9 (OpenStax, Biology 2e) caption: Two or more atoms may bond with each other to form a molecule. When two hydrogens and an oxygen share electrons via covalent bonds it forms a water molecule.

    (Source: OpenStax)

  • Molecules and Light

    • Simulation
    Screenshot: Phet Simulation - Molecules and Light.  Various options of Microwave, Infrared, Visible and ultra violet light sources.  Options to choose Carbon Monoxide, Nitrogen, Oxygen, Carbon Dioxide, Water Nitrogen or Ozone, with buttons to start pause the simulation and to show the light spectrum.

    Turn light source on to explore. Observe what happens in the observation window as you set up different combinations of light source and molecule. Note this simulation is the first to support our zoom and magnification feature, so zoom in for a closer look, if you need to.

    (Source: PhET Interactive Simulations)

  • Microscopic view of an organism with tendrils and a central body. Caption: Even the simplest multicellular animal

    Part of the "Visualizing Cell Processes" series. Includes the following modules: "The Cell Machinery," "A Variety of Cells," "Organic Molecules: The Building Blocks of Life," "Prokaryote Evolution and Diversity," and "Independently Living Eukaryotic Cells."

    (Source: DCMP)

  • Geometric illustration of atoms. Caption: So here we've drawn in all the atoms.

    Molecules form when individual atoms create bonds by sharing electrons. Understanding how atoms combine to make molecules allows scientists to predict many of the physical and chemical properties of substances. Since the outermost eight electrons are key to forming compounds, this unit shows how the Octet Rule provides a basis for predicting how atoms may gain, lose, or share electrons to fill the slots in their outer shells. A fundamental understanding of how electrons form bonds leads to the three-dimensional shapes of molecules and has implications in all aspects of chemistry. Part of the series Chemistry: Challenges And Solutions.

    (Source: DCMP)

  • Function Groups: Carboxyl and Sulfhydryl

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    • Text Document
    Carboxyl groups, which consist of a carbon with a double bonded oxygen and an upper O upper H group attached to a carbon chain, are able to ionize, releasing H positive ions into solution. Carboxyl groups are considered acidic. Sulfhydryl is a polar molecule.

    Figure 2.27 (OpenStax, Biology 2e) caption: These functional groups are in many different biological molecules. R, also known as R-group, is an abbreviation for any group in which a carbon or hydrogen atom is attached to the rest of the molecule.

    (Source: OpenStax)

  • Function Groups: Hydroxyl and Methyl

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    • 2.5D Tactile Graphic
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    • Text Document
    Hydroxyl groups, which consist of upper case O upper case H attached to a carbon chain, are polar. Methyl groups, which consist of three hydrogens attached to a carbon chain, are nonpolar.

    Figure 2.27 (OpenStax, Biology 2e) caption: These functional groups are in many different biological molecules. R, also known as R-group, is an abbreviation for any group in which a carbon or hydrogen atom is attached to the rest of the molecule.

    (Source: OpenStax)

  • Function Group: Phosphate

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    • 2.5D Tactile Graphic
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    • Text Document
    Phosphate groups consist of a phosphorous with one double bonded oxygen and two upper O upper H groups. Another oxygen forms a link from the phosphorous to a carbon chain. Both upper O upper H groups in phosphorous can lose an H positive ion, and phosphate groups are considered acidic.

    Figure 2.27 (OpenStax, Biology 2e) caption: These functional groups are in many different biological molecules. R, also known as R-group, is an abbreviation for any group in which a carbon or hydrogen atom is attached to the rest of the molecule.

    (Source: OpenStax)

  • Function Groups: Amino and Carbonyl

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    • Text Document
    Carbonyl groups, which consist of an oxygen double bonded to a carbon in the middle of a hydrocarbon chain, are polar. Amino groups, which consist of two hydrogens attached to a nitrogen, are able to accept H positive ions from solution, forming H subscript 3 baseline positive. Amino groups are considered basic.

    Figure 2.27 (OpenStax, Biology 2e) caption: These functional groups are in many different biological molecules. R, also known as R-group, is an abbreviation for any group in which a carbon or hydrogen atom is attached to the rest of the molecule.

    (Source: OpenStax)

  • Screenshot: Phet Simulation - Reactants, Products and Leftovers.  Button of: Sandwiches, Molecules and Games.

    Build sandwiches, then investigate molecules to explore reactants products and leftovers. Note this sim does not yet have a Keyboard Shortcuts dialog, and simple descriptions are in progress.

    (Source: PhET Interactive Simulations)

  • Thermometer in a beaker of water reading almost 100 degrees. Spanish captions.

    Students will explore how molecular movement is related to temperature, and how temperature can be measured. Important terminology includes thermometer, thermal energy, kinetic energy, potential energy, energy conversion, molecules, and heat.

    (Source: DCMP)

  • Oxygen Atoms

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    Two oxygen atoms are shown side-by-side. Each has six valence electrons, two that are paired and two that are unpaired. An arrow indicates that a reaction takes place. After the reaction, the four unpaired electrons join to form a double bond. This double bond can also be depicted by an equal sign between two Os.

    Figure 2.10 (OpenStax, Biology 2e) caption: A double bond joins the oxygen atoms in an O2 molecule.

    (Source: OpenStax)

  • Complex matrix of spherical objects and a thermometer showing 0 degrees. Caption: and it changes from the liquid to a solid.

    Introduces the concept that everything is made of matter, and examines the three states of matter. Defines and examines a range of solids, liquids, and gases. Uses graphics to show the effects of heat on atoms and molecules in solids. Summarizes each segment.

    (Source: DCMP)

  • Lipid Bilayer

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    • Text Document
    Diagram of a basic lipid bilayer forming a sphere. The molecules have hydrophobic tails and a hydrophilic head. The tails are attracted to each other, forming a chain of molecules that make up a ring, with the hydrophilic heads on the outside and the hydrophobic tails on the inside.

    Diagram of a basic lipid bilayer. Design modalities for the image include braille with and without labels, print with and without labels in greyscale, color, and texture.

    (Source: Benetech)

  • Parallel lines of oval objects form a wall bridged by tendril like structures. Floating on either side of the wall are spherical objects. Caption: for larger molecules to get through.

    Part of the "Inside the Living Cell" series. Describes the properties of the plasma membrane, how it governs the kinds of molecules that go in and out of cells, and how cells feed by engulfing (phagocytosis) and drinking in (pinocytosis) fluids. Also reviews membrane structure, osmosis, transport proteins, active transport, cell eating, cell drinking, and receptor proteins.

    (Source: DCMP)

  • Illustration of a cell showing the cross section to expose the contents of the cell. Ribbon-like substance blankets the inner edge with spheres of various sizes suspended within. Caption: First, mitochondria take in molecules derived from food,

    Part of the "Inside the Living Cell" series. Illustrates the mechanisms of photosynthesis and cellular respiration. Introduces adenosine triphosphate, or ATP, the universal energy carrier molecules that supply energy-hungry reactions. Also outlines the structure and function of chloroplasts and mitochondria, energy transforming organelles. Overviews ATP and chemical energy, mitochondria, aerobic respiration, chloroplasts, and the reactions of photosynthesis.

    (Source: DCMP)

  • Teacher and students from the magic school bus standing next to another character. Caption: Class, meet Molly.

    The Magic School Bus is an award winning animated children’s television series based on the book series of the same title by Joanna Cole and Bruce Degen. It is notable for its use of celebrity talent and being both highly entertaining and educational. When Wanda's favorite singer, Molly Cule, comes to town, she chooses Ms. Frizzle's class to wash her famous car. The kids clean it from top to bottom, but when Molly insists they missed a spot, they shrink down to see the molecules that make up the car. Only then can they discover how to clean it down to the very last bit. But time is running out. They'll need a molecular miracle to get the car clean before Molly's concert begins.

    (Source: DCMP)

  • Illustration depicts glycerol in zig zag fatty acid chains.Caption: of three fatty acid chains stuck onto a glycerol molecule.

    Host Alex Dainis explains the difference between saturated and unsaturated fats. She also discusses the chemical makeup of fatty acids.

    (Source: DCMP)

  • Carbon atom with two oxygen atoms. Caption: Carbon dioxide is an example of a compound.

    Students learn how to differentiate mixtures, solutions, elements, and compounds. Additional concepts and terminology discussed include: element, pure substance, properties, atoms, molecule, compounds, types of mixtures, suspension, colloid, and alloy.

    (Source: DCMP)

  • Cyclohexane Molecular Diagram

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    Cyclohexane is a ring of six carbons, each with two hydrogens attached.

    Figure 2.23 (OpenStax, Biology 2e) caption: Carbon can form five- and six-membered rings. Single or double bonds may connect the carbons in the ring, and nitrogen may be substituted for carbon.

    (Source: OpenStax)

  • Cyclopentane Molecular Diagram

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    Cyclopentane is a ring consisting of five carbons, each with two hydrogens attached.

    Figure 2.23 (OpenStax, Biology 2e) caption: Carbon can form five- and six-membered rings. Single or double bonds may connect the carbons in the ring, and nitrogen may be substituted for carbon.

    (Source: OpenStax)

Collections

3

Showing collections 1 to 3 of 3

  • Chemistry

    • Video
    • Image
    • 2.5D Tactile Graphic
    • PDF
    • Text Document
    • Simulation

    A collection of Chemistry related resources

    A collection containing 67 resources, curated by Benetech

  • Biology

    • Video
    • Image
    • Text Document
    • PDF
    • 2.5D Tactile Graphic
    • 3D Model
    • Audio File

    Biology related concepts

    A collection containing 59 resources, curated by Benetech

  • PhET Simulations

    • Simulation

    A collection of simulations from PhET.

    A collection containing 15 resources, curated by Charles LaPierre