Transcript: Facts What It Can Formed Into SYMBOL: (He) MASS NUMBER: 4.002602 VALENCE ELECTRONS: 2 Electron Protons: 2 Neutrons: 2 ORIGIN & DISCOVERY In 1868, Pierre J.C travele to Inida to follow the solar line and discovered a new yellow line meaning new element. In 1895 Per Teodor Cleve and Nils Abraham Langer at Uppsala, Sweden, repeated his experiement and confirmed it was helium. By: Rachel Collins Helium is colorless and tasteless. Helium is the second most common element in the universe(not on Earth). Symbol, Mass Number & Valence Electrons In the universe Helium is very abundant but rather on Earth its quite rare, Helium is found in the ground usually and a lot of the time it can be found in Texas. Neon and Argon are both similar elements to Helium because thye all are in the noble gas group Helium (He) Helium cannot be formed into, it is a natural and only thing element. How Its Used & Why Helium has a low density and because of this they are sometimes used for decorative balloons. It is also used to cool down satellite instruments. Location and Similar Elements Properties
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.
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
Transcript: Did you know that Helium is only found in the earth's atmosphere? Or that it was first available for purchase in 1928? Credit for some information goes to Google, rsc.org, and chemicool.com -Helium is found in raw gas that includes methane and other various elements Uses Although there is no exact date, Helium was discovered in 1868. The cost of Helium is usually around $20.00 for 9 cubic feet. Atomic Number: 2 Atomic Mass: 4.002602 (4.00) -Helium is extensively used for filling up balloons and in recent cases pressurising liquid fuel rockets. Helium Helium Atomic Mass Melting Point: -458°F (-272.2°C) Periodic Square Atomic Structure (example of Helium) The element was discovered during a Solar Eclipse in India. Origin of name: Comes from the greek word Helios meaning the Sun. Helium's group name is Noble Gases Will Gerardo Period 5 Helium = Atomic Number Density: Helium naturally occurs in the gas phase which means that the element is not very dense. Helium's average density is 0.1785 g/ml. Boiling Point: -452.1°F (-268.9°C) The History of Helium Helium does not bond because it is an inert gas. Description and physical properties: Helium was discovered by Pierre Janssen & Norman Lockyer. The element Helium has two valence electrons
Transcript: States: Liquid: 0 K Gass: 1 K + Melting point: 0 k Radius: 31pm Density: .1785kg/m cubed Periodic Table: Atomic Number: 2 Atomic Mass: 4.003 amu Symbol: He Electron Configuration: 1s2 History Discovery: 1886- Helium is first detected as an unknown yellow spectral light during a solar eclipse by a french astronomer, Jules Janssen, and Norman Lockyer. 1895- Two Swedish chemists, Per Teodor Cleve and Nils Abraham Langlet, formally discover Helium. Cleve and Langlet found Helium eminating from a sample of uranium ore. Uses: Helium is used in Cryogenics, the cooling of superconducting magnets, such as an MRI Scanner. Used as a pressuring and purge gas Used in growing crystals to make siliconwafers Known most widely as a lifting gas in balloons and airships Also, inhaling Helium temporarily changes the timbre and quality of the human voice. Helium Properties:
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
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
Transcript: BARCODE READERS ATOMIC NUMBER:2 NUMBER OF PROTONS:2 NUMBER OF ELECTRONS:2 NUMBER OF NEUTRONS:2 He HELIUM ROCKET FUEL DID YOU KNOW THAT HELIUM HAS ITS OWN SPECTRUM?WELL, IN THE MIDDLE PART OF THIS SPECTRUM THERES A YELLOW LINE THAT ASTRONOMERS NOTICED IN 1868WHEN VIEWING THE SUNS PROMINENCES. helium can be a liquid,and even solid state, but they can only occur near absolute zero HELIUM COST A BIT! ROCKET FUEL HELIUM 2 NUMBERS AND ITS WONDERS 2 THE SYMBOLE FOR HELIUM USA BALLOONS ROCKET FUEL HAS HELIUM IN IT TO HELP LIFT OFF THE ROCKET, THE ROCKET USES MANY OTHER ELEMENTS BUT HELIUM IS A MAIN SOURCE IN IT. HELIUM IS IN MANY THINGS, SUCH AS....... BALLOONS! BALOONS WILL FLOAT IF THERE IS HELIUM IN IT, NOT REGULAR AIR. atomic number HELIUM HELIUM # of electrons # of protons liquid? helium is tastless and oderless,colorless gas IF YOU ARE LOOKING TO BUY HELIUM TO INFLATE BALLOONS THAT MIGHT COST $20, BUT IF YOU WANT TO WELD SOMETHING YOU WOULD NEED TO GET A LARGER AMOUNT WICH WOULD COST ABOUT $150-$225! wich is about $5.20 for 100g HELIUM USA, is the worlds best supplier of helium! last year(2010) the united states exported 2.5 billion cubic feet of heliumTO EUROPE AND ASIA!WOW! BARCODES ARE ON ALL OF YOUR PUBLIC GROCERY ITEMS OR WALMART OR ANY STORE THAT YOU BUY FROM, IN ORDER TO DETECT THE BARCODE THEY MUST HAVE A BARCODE READER! Template by Missing Link Images from Shutterstock.com HELIUM SPECTRUM? 2
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