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Helium Presentation

Transcript: By Carmen Steele "Chemical Elements.com - An Interactive Periodic Table of the Elements." http://www.chemicalelements.com/. Accessed 28 Feb. 2018. "WebElements." https://www.webelements.com/. Accessed 28 Feb. 2018. "Hydrogen - Reactivity of hydrogen chemical element Britannica.com." https://www.britannica.com/science/hydrogen/Reactivity-of-hydrogen. Accessed 8 Mar. 2018. "Helium - Chemistry Encyclopedia - gas - Chemistry Explained." http://www.chemistryexplained.com/Ge-Hy/Helium.html. Accessed 8 Mar. 2018. "Helium – expert written, user friendly element information - Chemicool." https://www.chemicool.com/elements/helium.html. Accessed 22 Mar. 2018. "It's Elemental - The Element Helium - Science Education at Jefferson ...." https://education.jlab.org/itselemental/ele002.html. Accessed 22 Mar. 2018. “Periodic Table.” Wikipedia, Wikimedia Foundation, 23 Mar. 2018, en.wikipedia.org/wiki/Periodic_table. “Element Helium Periodic Table Helium Coasters Cork, Puzzle & Tile Coasters - CafePress.” CafePress.com, www.cafepress.com/+element-helium-periodic-table-helium+coasters. “It's Elemental.” It's Elemental - The Element Californium, education.jlab.org/itselemental/iso002.html. Helium Introduction Introduction My name is Helium which originated from the greek word Helios which means sun. I was discovered by Sir William Ramsay, in 1895, in London, England. FAMILY NUMBER: 18 Noble Gas PERIOD NUMBER: 1 Family Family Noble Gas The 1st electron shell is filled I do not need to lose or gain electrons because I have 2 in the 1st shell which is the perfect amount. I don’t need any more electrons so I don’t react with anything. I also don't bond with any families MY FAMILY MEMBERS: Neon, Argon, Krypton, Xenon, Radon, Ununoctium Noble Gas Period Period Group 1 Group 1 Hydrogen is very reactive. It reacts with most elements. Ions Ions An atom that has lost or gained electrons to satisfy the octet rule. What is an Ion? What is an Ion? I have no common Ions. Therefore, I am not an electron donor, an electron acceptor, both, or neither. Common Ions Common Ions Isotopes Isotopes Atoms of the same element that have different numbers of neutrons. My Isotopes I have ten isotopes. The isotopes He3 and He4 are stable. The isotopes He5 though He10, they all have very short half lives. My Isotopes CharecteristicProperties Charecteristic Properties I am odorless, colourless gas. At standard temperature and pressure I take the form of glass. My boiling point is -268.9°C and my freezing point is -272.2°C. This is very low in comparison to water which boils at a 100°C and freezes at 0°C. My density is 0.179 g/L and 0.000179 g/mL.

Helium Presentation

Transcript: Formative Assessment Science Ravya 7A Helium (He) Title Image from: Helmenstine, Anne Marie, and Helmenstine. “What Are the Helium Isotopes?” Thoughtco., Dotdash, www.thoughtco.com/isotopes-of-helium-607735. History History - Helium was first found on the sun. - Helium was discovered in the year 1868. - It was first noticed by Pierre-Jules-César Janssen when he conducted a research on total solar eclipse and saw a yellow line on the sun's spectrum. - Then, Sir Norman Lockyer also noticed the yellow line and thought that it could not be assembled by nothing of the elements familiar at the time being. - The unknown element was entitled "Helium" by Sir Norman Lockyer. - They confirmed each other's story. - Helium is named after the Greek god of the sun, Helios. According to (“It's Elemental.” It's Elemental - Isotopes of the Element Barium, education.jlab.org/itselemental/ele002.html.) and (Boissoneault, Lorraine. “How Scientists Discovered Helium, the First Alien Element, 150 Years Ago.” Smithsonian.com, Smithsonian Institution, 17 Aug. 2018, www.smithsonianmag.com/history/how-scientists-discovered-helium-first-alien-element-1868-180970057/.), Pierre-Jules-César Janssen and Sir Norman Lockyer was the first to discover helium. Source Source About 1. Name : Helium 2. Symbol : He 3. Atomic Mass : 4.0026 u 4. Atomic Number : 2 About The picture was taken from: (Aragon, Carlos. “Helium Periodic Table Element Color Icon On White Stock Illustration - Illustration of Graphic, Groups: 87278610.” Dreamstime, Dreamstime, 1 Mar. 2017, www.dreamstime.com/stock-illustration-helium-periodic-table-element-color-icon-white-background-image87278610.) Gas / Non - metal - Party / Scientific balloon. Role in the environment Role - Deep sea diving. - Dating Method / Experiments. Source (Muthiaf, . “Helium in Your Daily Life.” Cutmuthia, 1 Dec. 2013, cutmuthia4.wordpress.com/2013/11/25/helium-in-daily-life/.) listed the roles of Helium for lifestyle uses. This website also confirmed that Helium, Oxygen and Nitrogen was combined to keep divers from high-pressured water under the sea; because (“It's Elemental.” It's Elemental - Isotopes of the Element Barium, education.jlab.org/itselemental/ele002.html.) also confirmed it. (“Water Treatment Solutions.” Lenntech Water Treatment & Purification, www.lenntech.com/periodic/elements/he.htm.) told me about the suffocation that human will suffer if they absorbed helium. Source That's it ! Done

Helium Presentation

Transcript: By: Thomas Thies element The helium that we use today is found in natural gas deposits. But in 1906, a well that was drilled in Dexter, Kansas was found and contained a very high 1.84% of helium concentration. works cited Helium has an atomic number of 2. The atomic number of an element tells the number of protons in the nucleus of an atom. Breathing in helium from inflated balloons is usually fun,fun to laugh at,and harmless,breathing in pure helium can be dangerous because it replaces necessary oxygen.Also, since bodies need oxygen, they are getting pure helium instead. Thanks for watching my Prezi! Helium should not be used to inhale, but to be used to... inflate balloons for birthday parties. Helium should especially not be handled by people under the age of 18. INHALING HELIUM... Atomic Number: you have probably seen theses helium inflated balloons before. Entertaining video about helium! Helium is used for many things in the world such as to inflate blimps, scientific balloons and party balloons. It is used to pressurize the fuel tanks of liquid fueled rockets and in supersonic windtunnels. atomic mass The History of Helium: The Atomic Symbol: Helium is used for.. http://www.periodicvideos.com/videos/002.htm atomic number helium Should certain precautions be used when handling Helium? where helium was found where can this element be found? This is an example of what Helium is used for.. Properties *www.periodicvideos.com *www.youtube.com *www.google.com Helium is a chemical element with symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, anatomic gas that is at the top of the noble gas group in the periodic table. Its boiling and melting points are the lowest among the elements and it only exists as a gas except in extreme conditions. to inflate balloons Is it dangerous? Helium's atomic symbol is (He). The Latin name for helium is "Helios" meaning 'the sun' where helium was first found Helium, the second most plentiful element in the universe. Helium was first discovered on the sun before it was found on the earth. Pierre-Jules-César Janssen, a French astronomer, noticed a yellow line in the sun's spectrum while studying a total - solar eclipse in 1868. Helium

Helium Presentation

Transcript: Helium Presentation http://education.jlab.org/itselemental/ele002.html http://www.elementalmatter.info/helium-properties.htm http://www.universetoday.com/53563/who-discovered-helium/ http://www.universetoday.com/75719/where-is-helium-found/# http://www.usesof.net/uses-of-helium.html Works Cited Physical and Chemical Properties. "Helium is rare on Earth but there are places where it is readily found. If you look at space the majority of helium is in stars and the interstellar medium. This is due to the fusion reaction that powers most stars fusing single hydrogen atoms to create helium atoms. This process balanced with a star’s gravity is what helps it to stay stable for billions of years. On Earth the majority of helium found comes from radioactive decay. This is the opposite nuclear reaction called fission that splits atoms. For this reason radioactive minerals in the lithosphere like uranium are prime sources for helium." - University Today by Tega Jess Periodic Table Information Helium Uses of Helium Element Classification: Non-metal Atomic number: 2 Atomic weight: 4.003 Density: 0.0001785 grams per cubic centimeter Phase at Room Temperature: Gas Period Number: 1 Group Number: 18 Group Name: Noble Gas It has 2 protons, 2 neutrons, and 2 electrons The Discovery of Helium Jules Janssen discovered this element on August 18th, 1868 while in Guntur, India. He was an astronomer studying the star when he made his discover, but it was actually Norman Lockyer and Edward Frankland who offically named it Helium. Color: Colorless Odor: Odorless Texture: No Texture State of matter at room temperature: Gas Melting point: 0.95 K (-272.2°C or -458.0°F) Boiling point: 4.22 K (-268.93°C or -452.07°F) Flammability: non-flammable Reactivity: It is less soluble in water than any other gas Uses of Helium include; the human voice can be changed to a higher pitch, it a gas that is used as light weight aircraft fuel, and the element is usually combined with hydrogen in air balloons, (hydrogen alone is fine, but helium makes the balloon safer to use). The same gas is used by caisson workers as well. Divers use oxygen and helium during their dives because the combination provides them with the atmosphere necessary to survive in high pressure environments. Location of Helium and How It Is Obtained. Sophia Ward Cristine Francis October 9, 2016

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