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![]() Various scientists investigated the nature of air and oxygen in the 17th and 18th centuries. Display: TBC Oxygen – O – element 8 History: Elemental nitrogen is used as an inert atmosphere and as a cryogenic liquid. Nitrogen compounds have a huge range of applications from fertilisers to explosives. The association was that nitre was used to make an acid (nitric acid) of which nitrogen was a key element. In 1790, Jean-Antoine Chaptal proposed the name nitrogene from nitre, the French name for potassium nitrate, and Greek -gene meaning to produce. Antoine Lavoisier proposed the name azote from Greek meaning no life, as animals and flames died in pure nitrogen, and whilst this was adopted in other languages, only the chemical term azo- was adopted in English, as did the name pnictogen (Greek for producing suffocation) for the group to which nitrogen belongs. Rutherford did not identify it as an element and several other contemporary scientists also investigated it and proposed the names burnt air and phlogisticated air. Even though 78% of the Earth’s atmosphere is nitrogen gas, it was only discovered in 1772 by Daniel Rutherford who called it noxious air. Display:Ĭarbon fibre, anthracite coal, charcoal, graphite brushes from a motor and graphite electrodes, low density polyethylene and different allotropes of carbon: diamonds (loose), diamond-tipped drill bit, graphite, fullerenes (carbon nanotubes), graphene (in solution) Nitrogen – N – element 7 History:Īmmonia, nitric acid and nitrate salts were known, in some cases, since ancient times. Carbon has a crucial biological role and all plant and animal products contain carbon. Carbon fibres are used in woven materials. Uses:Ĭarbon’s main industrial uses are as a fuel (coal, oil, and gas) and for making plastics, it is combined with iron to make steel, and diamonds are used in cutting and drilling tools. They proposed the name carbone after the Latin carbo meaning charcoal. Vandermonde did the same with graphite, previously believed to be a type of lead. Similarly, in 1786, Claude Louis Berthollet, Gaspard Monge, and C. In 1772, Antoine Lavoisier showed that diamonds and charcoal produced the same reaction products when burnt. Display:Ĭarbon was known since prehistoric times in the form of charcoal, however it was not known that diamonds and graphite are the same element. Boron compounds such as borax and boric acid are used domestically as cleaning products, insecticides, and food additives amongst other uses. ![]() Uses:īoron is used as an additive in glass, particularly fiberglass and borosilicate glass, and in ceramics. The name boron was adopted by analogy with carbon. In 1808 boron was isolated independently by Joseph Louis Gay-Loussac and Louis Jacques Thenard, and Humphry Davy who proposed the name boracium, after the mineral borax. Together with groups 17 and 18, these elements form the p-block.Īlthough boron-containing minerals were known historically, boron compounds were not used widely prior to the 19th century when the mineral borax became widely available. The lighter group 15 elements can form anions with a -3 charge, and the lighter group 16 elements can form anions with a -2 charge. ![]()
![]() Printed on standard poster paper, it’s a video game poster you can vibe. Trippy, hippie, psychedelic wall art that stands out in any home or dorm decor. Watch straps are silicone with a silver metal buckle. Illuminate your walls with the Minecraft The Creeper Poster.USB Cable Included (Please charge 1 hour prior to use).Long lasting battery allows for uninterrupted fun throughout the day and night.The easy-to-open packaging is perfect to gift wrap and features the official Minecraft logo. Zur Navigation springen Zur Suche springen. Beim Angriff zerstören sie sich selbst in einer Explosion und richten dabei in ihrer Umgebung großen Schaden an. Shields are extremely useful while surviving against creeper explosions in Minecraft (Image via Mojang) Shields are the most basic form of protection in the game. ![]() Shop official Minecraft wall art to show off just how much you love jumping into the Minecraft world. From offices and media rooms to dorms and bedrooms, the official Minecraft Wall Art Collection lets you deck your space out with the latest Minecraft designs. Minecraft Poster Charged - Poster Großformat günstig online kaufen - G876265. GB eye FP4521 Minecraft World Beyond Maxi-Poster 61 x 91,5 cm. Creeper (von englisch to creep: schleichen, sich anschleichen) sind aggressive Monster, die nur in der Oberwelt spawnen. Minecraft Save a Slice Sticky Backed Poster. This watch allows you the ability to download your awesome photos and videos and share these priceless moments with friends and family in a safe and secure way! The watch does not connect to the internet, nor does it have wifi, Bluetooth, or any wireless technology. Minecraft Poster Unterwelt Mini-Poster 50x40 cm.Shop unique custom made Canvas Prints, Framed Prints, Posters, Tapestries, and more. Complete with a selfie-cam and video capability, you can download photos and videos to share with your friends and family. High-quality Minecraft Creeper Wall Art designed and sold by artists. Sport your love for Minecraft in style with this Minecraft Kids Smartwatch featuring a selfie-cam, games, voice recorder, pedometer, alarm, stopwatch, and calculator. The next step is to show your knowledge of Polygon Properties with our interactive matching activity. There are families of shapes and some shapes can be identified with more than one name. Each shape has its own properties which define it. "Knowing the names of the polygons is only the start. When planning to use technology in your lesson always have a plan B! It may be worth remembering that if should go offline for whatever reason, there are mirror site at that contains most of the resources that are available here on. The short URL, ready to be copied and pasted, is as follows:Īlternatively, if you use Google Classroom, all you have to do is click on the green icon below in order to add this activity to one of your classes. If you found this activity useful don't forget to record it in your scheme of work or learning management system. More activities designed for students in upper Secondary/High school. One way toĪddress the problem is through the use of interactive activities and Traditional teaching fails to actively involve students. Understanding Mathematics, at every level, requires learnerĮngagement. Secondary National Strategy, Mathematics at key stage 3 Numeracy also demands understanding of the ways in whichĭata are gathered by counting and measuring, and presented in Repertoire of mathematical techniques, and an inclination andĪbility to solve quantitative or spatial problems in a range ofĬontexts. It requires understanding of the number system, a It involves developing confidence and competence with numbers and It is more than an ability to do basic arithmetic. Proficiency which is developed mainly in Mathematics but also in You can read the newsletter online or listen to it by downloading the podcast. Click on the image above to read about the latest developments on this site and try to solve the puzzle of the month. The Transum Newsletter for April 2024 has just been published. Transum breaking news is available on Twitter and if that's not enough there is also a Transum Facebook page. You can listen to the podcast while you are commuting, exercising or relaxing. The newsletter is then duplicated as a podcast which is available on the major delivery networks. Thanks."Įach month a newsletter is published containing details of the new additions to the Transum website and a new puzzle of the month. ![]() I like being able to access Starters for the whole month so I can use favourites with classes I see at different times of the week. The questions are so varied I can use them with all of my classes, I even let year 13 have a go at some of them. "A Maths colleague introduced me to your web site and I love to use it. My pupils say they love them!!!"Ĭomment recorded on the 19 November 'Starter of the Day' page by Lesley Sewell, Ysgol Aberconwy, Wales: "I think that having a starter of the day helps improve maths in general. Are you a mathematician?Ĭomment recorded on the 9 October 'Starter of the Day' page by Mr Jones, Wales: Mathematicians are not the people who find Maths easy they are the people who enjoy how mystifying, puzzling and hard it is. Contrary to this is the transverse lie, in which the fetus is positioned 90° with respect to the mother's dorsal column. This is the most common lie of fetuses in labor. If the fetus and maternal column are parallel (on the same long axis), the lie is termed vertical or longitudinal lie. Using the techniques described above, the clinician should be able to develop an assessment of the relationship between the fetal and maternal dorsal columns (the longitudinal axis of the human body). The ultrasound should be 100% accurate in diagnosing the type of fetal presentation. If the presenting part is not easily palpable, it is important that further assessment be obtained by performing an ultrasound examination. The vaginal examination also allows the clinician to assess the degree of cervical dilation and effacement. The status of the amniotic membranes and the degree of engagement of the presenting part are indicators of fetal presentation and position. This maneuver should allow the identification of the fetal parts in the lower pole of the uterus.Īfter the abdominal examination, a digital vaginal examination is performed. The palms of both hands are placed on either side of the lower maternal abdomen, with the fingertips facing toward the pelvic inlet. Maneuver IV: This last maneuver resembles the first one, but instead of facing the fundus, the examiner faces the pelvis of the patient. This will allow the examiner to develop a further identification of the presenting part and assessment of its engagement. This is done on the lower abdomen, a few centimeters above the symphysis pubis. Maneuver III: Using one hand, the examiner will grasp the presenting part between the thumb and fingers. With this maneuver, the examiner will be able to determine the location of the fetal back. Maneuver II: Once an assessment is made of the fetal part present in the uterine fundus, the hands are placed at either side of the maternal abdomen. This should allow the identification of the fetal parts in the upper pole (fundus) of the uterus. The fundus is palpated with the fingertips of both hands facing toward the maternal xiphoid cartilage. Maneuver I: The uterine contour is outlined. ![]() (Pritchard JA, MacDonald PC: William's Obstetrics, 16th ed. The fetus is in a left occiput anterior position. What follows is a description of these maneuvers:įig. The accuracy of Leopold's maneuvers can be hampered by the maternal body habitus, the presence of uterine fibroids, multiple gestations, or polyhydramnios. Through use of Leopold's maneuvers, a clinical estimate of the fetal weight also can be obtained, although this is not a formal part of this examination. In addition, a clinical estimate of the degree of engagement of the presenting part could be made, although the final determination of engagement must be made by way of a vaginal examination. The examiner may be able to palpate the presenting part. Leopold's maneuvers 1 consist of an abdominal examination divided into four steps of palpation of the gravid uterus and fetus (Fig. ![]() The obstetrician should be able to determine the fetal lie, presentation, and position, using the maternal vertebral column and pelvis as reference points, by Leopold's maneuvers, vaginal examination, and if necessary, ultrasound. To assess the potential impact of the fetus on the characteristics of the labor process, it is important that the obstetrician be knowledgeable of the basic concepts used routinely to describe how the body of the fetus is located in the uterus. |
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