Famous Scientists - Dmitri Ivanovich Mendeleev Dmitri Ivanovich Mendeleev Imagine if there was an element no one had ever seen before, but one day you announce that you know all its properties. People will call you crazy, won't they? But that's what Dmitri Mendeleev did! Mendeleev creates the Periodic Table The story goes like this. 19 TAC Chapter 112, Subchapter B Chapter 112. Texas Essential Knowledge and Skills for Science Subchapter B. Middle School Habitabilité planet-terre Pierre Thomas Laboratoire de Sciences de la Terre, ENS de Lyon Olivier Dequincey The NEW Periodic Table Song (In Order) Lyrics There’s Hydrogen and Helium Then Lithium, Beryllium Boron, Carbon everywhere Nitrogen all through the air With Oxygen so you can breathe And Fluorine for your pretty teeth Neon to light up the signs Sodium for salty times Magnesium, Aluminium, Silicon Phosphorus, then Sulfur, Chlorine and Argon Potassium, and Calcium so you’ll grow strong Scandium, Titanium, Vanadium and Chromium and Manganese CHORUS This is the Periodic Table Noble gas is stable Halogens and Alkali react agressively Each period will see new outer shells While electrons are added moving to the right
Using Lego Bricks: Elements, Compounds, and Mixtures Activity – Middle School Science Blog I use this activity to help students visualize how atoms are used as the building blocks of matter and how matter can be classified as elements, compounds, or mixtures. Materials 12 Legos – 3 different colors and sizes with 4 of each kind Lego Bricks must be the same size for each color (see photo above)stored in sandwich sized zip-top bags1 set per 2 studentscolored pencilshandout (pdf)
Dmitri Mendeleev Dmitri Mendeleev revolutionized our understanding of the properties of atoms and created a table that probably embellishes every chemistry classroom in the world. Early Life and Contributions: Dmitri Mendeleev was born at Tobolsk, Siberia in 1834. Elements, Compounds, and Mixtures Classification Activity – Middle School Science Blog Materials Elements, Compounds, and Mixtures – NEW: Google Slides – Public LinkSorting/Task Cards and answers (pdf) – laminate and cut apart, 1 set per 2-4 studentsNEW: Elements, Compounds, and Mixtures NotesE, C, M, ? (pdf) – laminated or glued onto construction paper, cut apart, 1 set per groupOLD: PPT Slides (ppt – read only access)this ppt can be downloaded and saved to your computer, but not modifiedclick on ‘read only‘ to open the ppt after downloadingOLD: Notes (pdf) Note: I modified this lesson to add a hands-on component with the addition of task cards that students can sort at their desks. I use this lesson as a group work activity to introduce Elements, Compounds, and Mixtures.
Hunting the Elements PBS Airdate: April 4, 2012 DAVID POGUE (Technology Guru): Why do bombs go boom? You have created fire! I could feel that puppy! How much gold is in 400 tons of dirt? Word Search Game: Chemistry - Elements Games >> Word Search >> Chemistry - Elements Find the terms about Chemistry - Elements inside the word search puzzle. For more information see the directions below the puzzle. Go here for the printable version. Directions The object of the game is to find all the terms about Chemistry - Elements hidden in the word search grid.
Mathematical Issues for Chemists : nrich.maths.org Typically, mathematics is regarded as a useful tool by chemists, and all undergraduate chemists will need to attend some sort of mathematics course in order to access and make the most of their science. There are various levels of mathematics used in chemistry degrees, ranging from combinatorics and proportional reasoning to heavy-weight differential equations and Fourier analysis. However, study of any of the underlying mathematics out of context tends to reduce mathematical activity to a series of clean, dry routines and procedures.
Cell Size and Scale Some cells are visible to the unaided eye The smallest objects that the unaided human eye can see are about 0.1 mm long. That means that under the right conditions, you might be able to see an ameoba proteus, a human egg, and a paramecium without using magnification. A magnifying glass can help you to see them more clearly, but they will still look tiny. Smaller cells are easily visible under a light microscope. It's even possible to make out structures within the cell, such as the nucleus, mitochondria and chloroplasts.