11 cheap gifts guaranteed to impress science geeks Science comes up with a lot of awesome stuff, and you don't need a Ph.D, a secret lab, or government funding to get your hands on some of the coolest discoveries. We've got a list of 11 mostly affordable gifts that are guaranteed to blow your mind, whether or not you're a science geek. Click on any image to see it enlarged. 1. Also known as frozen smoke, Aerogel is the world's lowest density solid, clocking in at 96% air. Aerogel isn't just neat, it's useful. Price: $35 2. Inside these sealed glass balls live shrimp, algae, and bacteria, all swimming around in filtered seawater. EcoSpheres came out of research looking at ways to develop self-contained ecosystems for long duration space travel. Price: $80 3. NASA has been trying to figure out how to get a sample of rock back from Mars for a while now. Every once in a while, a meteorite smashes into Mars hard enough to eject some rocks out into orbit around the sun. Price: $70+ 4. Price: $150 5. So what's next year's new color going to be? 6.
AP Chemistry Labs AP Chemistry Labs Mr Keefer Brockport High School NY USA Absolute Zero – Charles’ Law Determination of the Gas Law ConstantTitration Techniques Titration of Acids and Bases Electrolytic Cells Separation of a Heterogeneous Mixture Conversion of a Carbonate to a Chloride Gravimetric Analysis: Phosphorus in Plant Food Determination of Ksp for a Sparingly Soluble Salt Rates of Reaction using Gas Volume Electrolysis, the Faraday, and Avogadro’s Number Electrochemical Cells Hydrolysis of Salts Organic Chemistry: Nomenclature and Isomers Oxidation-Reduction Titration: Oxalate Radioactive Decay Stoichiometry Heat of Neutralization Molecular Weight of a Condensable Vapor Ka of an Acid Balmer Series Flame Test of Elements Colligative Properties: Freezing Point Depression Water of Hydration Molecular Geometry Mohr Method for Chloride Determination Chemical Formulas
Make a Bouncing Polymer Ball - Experiment with Polymers Introduction Balls have been toys practically forever, but the bouncing ball is a more recent innovation. Bouncing balls were originally made of natural rubber, though now bouncing balls can be made of plastics and other polymers or even treated leather. You can use chemistry to make your own bouncing ball. The bouncing ball in this activity is made from a polymer. Bouncing Polymer Ball Materials Here's a list of materials you need to gather to make bouncing polymer balls: borax (found in the laundry section of the store) cornstarch (found in the baking section of the store) white glue (e.g., Elmer's glue - makes an opaque ball) or blue or clear school glue (makes a translucent ball) warm water food coloring (optional) measuring spoons spoon or craft stick to stir the mixture 2 small plastic cups or other containers for mixing marking pen watch with a second hand metric ruler zip-lock plastic baggie Let's make bouncing polymers balls... Polymer Projects Plastics and Polymers
PT - WebElements Pinto Bean Germination Experiment Ready, set, grow! How long does it take for a bean to get growing? How does a beanstalk grow in the first place? In this experiment, you’ll investigate the growth of pinto beans and see if you can create a stronger bean plant by giving plants the nutrients they need to survive and thrive. Materials Paper towels 5 Clear plastic cups 10 Pinto bean seeds 5 Plant misters Tap water Magnifying glass Permanent marker Wood ash from a fireplace Liquid kelp fertilizer Liquid fish fertilizer 1 tsp. Procedure Place your clear plastic cups on a table. Results After 4 to 5 days, the growing bean seedlings will begin to sprout. Why? Inside a seed, there’s a whole new plant waiting to grow. Plants need water and light to grow. Wood ash is high in potassium, which provides the correct environment for plant metabolism. Disclaimer and Safety Precautions Education.com provides the Science Fair Project Ideas for informational purposes only.
Adrian Dingle Build Your Own Lungs Type Life Science Grade 5th – 7th Difficulty of the Project Medium Cost Safety Issues None Approximate Time Required to Complete the Project 10 – 20 minutes Objective Witness the process of how the lungs expand and contract with the help of the diaphragm. Materials and Equipment/Ingredients Balloons(Grocery/Convenience Store) Clear Plastic 1 Liter Soda Bottles (Grocery Store) Tape (Hardware/ Office Supply Store) Rubber Bands (Hardware/ Office Supply Store) Y Shaped Tube Introduction Build your own lungs out of balloons and soda bottles. Terms, Concepts and Questions for Background Research Expand and Contract Pressure P.S.I. Research Questions What causes the balloons to expand? Experimental Procedure Cut the soda bottle’s bottom end so that it has a large circle on the bottom and the spout on the top. Put this balloon on the bottom of the bottle so that it covers the circular opening. To work the model, pull on the bottom balloon and watch as the 2 balloons on the inside of the bottle grow bigger.
ChemTutor By the 1884 definition of Svante Arrhenius (Sweden), an acid is a material that can release a proton or hydrogen ion (H+). Hydrogen chloride in water solution ionizes and becomes hydrogen ions and chloride ions. If that is the case, a base, or alkali, is a material that can donate a hydroxide ion (OH-). Sodium hydroxide in water solution becomes sodium ions and hydroxide ions. By the definition of both Thomas Lowry (England) and J.N. Brønsted (Denmark) working independently in 1923, an acid is a material that donates a proton and a base is a material that can accept a proton. We can consider the same idea in the Lowry - Brønsted fashion. Chemists or chemistry texts often use the hydrogen ion, H+ to show a hydrogen ion released into water solution. Back to the beginning of Acids and Bases. For the properties of acids and bases we will use the Arrhenius definitions. Acids release a hydrogen ion into water (aqueous) solution. Acids neutralize bases in a neutralization reaction. THE pH BOX
All About Your Senses: Experiments to Try Skip Navigation KidsHealth from Nemours for Parents for Kids for Teens What Other Kids Are Reading All About Your Senses: Experiments to Try KidsHealth> Kids> Movies & More> Experiments> All About Your Senses: Experiments to Try Your body does some amazing things, so why not put it to the test? Sign up for our free weekly eNewsletters here Visit the Nemours Web site. Note: All information on KidsHealth® is for educational purposes only. © 1995-2015 The Nemours Foundation. Images provided by The Nemours Foundation, iStock, Getty Images, Corbis, Veer, Science Photo Library, Science Source Images, Shutterstock, and Clipart.com Skip Navigation KidsHealth from Nemours for Parents for Kids for Teens What Other Kids Are Reading All About Your Senses: Experiments to Try KidsHealth> Kids> Movies & More> Experiments> All About Your Senses: Experiments to Try Your body does some amazing things, so why not put it to the test? Sign up for our free weekly eNewsletters here View: Mobile | Desktop
pH, pOH, and K pH, pOH, and Ka pH and pOH Adding an acid to water increases the H3O+ ion concentration and decreases the OH- ion concentration. [H3O+][OH-] = 1.0 x 10-14 The table below lists pairs of H3O+ and OH- ion concentrations that can coexist at equilibrium in water at 25oC. Pairs of Equilibrium Concentrations of H3O+ and OH- Ions That Can Coexist in Water Data from this table are plotted in the figure below over a narrow range of concentrations between 1 x 10-7 M and 1 x 10-6 M. It is impossible to construct a graph that includes all the data from the table given above. log (10-7) = -7 Since the concentrations of the H3O+ and OH- ions in aqueous solutions are usually smaller than 1 M, the logarithms of these concentrations are negative numbers. pH = - log [H3O+] Similarly, pOH is the negative of the logarithm of the OH- ion concentration. pOH = - log [OH-] pH + pOH = 14 Acid-Dissociation Equilibrium Constants By definition, a strong acid is any substance that is good at donating an H+ ion to water.
Là est la question Manipulations Verse un peu de lait dans le bol Ensuite, dépose quelques gouttes de colorant alimentaire sur la surface du lait, mais sans mélanger. Tu peux t'amuser à déposer plusieurs couleurs dans le bol, chacune séparée. Trempe légèrement le bout du manche de la cuillère de bois dans le savon à vaisselle. Explication Au contact du savon à vaisselle, les gouttes de colorant se dispersent rapidement. Le lait renferme beaucoup d'eau.
Radioactive Lesson Purpose To develop the idea that carbon dating is based on gathering evidence in the present and extrapolating it to the past. Students will use a simple graph to extrapolate data to its starting point. Context This lesson is the third in a three-part series about the nucleus, isotopes, and radioactive decay. By the end of the 8th grade, students should know that all matter is made up of atoms, which are far too small to see directly through a microscope. For students, understanding the general architecture of the atom and the roles played by the main constituents of the atom in determining the properties of materials now becomes relevant. In this lesson, students will be asked to consider the case of when Frosty the Snowman met his demise (began to melt). Planning Ahead For the laboratory portion of this lesson, you will have to set up the ring stands, rings, funnels, and graduated cylinders. Motivation Begin by having students read the article The Story of Carbon Dating. Development
science - Edventures with Kids We are gearing up for some science fun with this week's Discover & Explore linky. I love introducing hands-on science activities to kids so that they can experiment, think and ponder all those wonderful questions they love to ask to stump their parents ;) There are a number of easy ways to learn with science -- many of them arise from the questions the kids have about things they see happening in the world around them. For fun ideas about how to introduce every day science concepts, try a few of these fun ways to teach kids about science. Other questions are more easily answered with a quick experiment like this one on optial illustions. My kids have always been crazy over the optical illusions they see in books and very intrigued in how it's done. Amazing Optical Illusions Xtreme Illusions (National Geographic Kids) An optical illusion is a visual image that can be perceived differently depending on how you look at it. This is a super easy one to do at home -- here's what you'll need: