TED-Ed's New Interactive Periodic Table

 TED-Ed's new interactive periodic table

TED-Ed launches an interactive periodic table with a video for every element If you’ve ever taken a chemistry class, you know that memorizing all of the elements and understanding their properties can be difficult! To help provide a study aid, TED-Ed collaborated with Brady Haran, best known for his YouTube channel Numberphile and his extensive video coverage of the periodic table, to create a clickable periodic table with videos on every element. Click around the table »

source:
http://us4.campaign-archive1.com/?u=367d080dac70911f825f109f9&id=92b1054add&e=4411419a30

It's Elemental (with example worksheet)

Whether they are created by nature or in the lab, chemical substances are all made of some combination of just 118 pure elements.

These elements come together to produce an amazing diversity of materials. In this interactive, discover which elements are most abundant in the universe, the sun, and the Earth as well as in the human body and in that flashiest of human creations—fireworks.

Also, learn which elements have the most extreme properties on the periodic table.

 

Launch Interactive 

 

Download

  In this interactive periodic table, explore the elements and their properties and abundances.

A previous version of this feature originally appeared on the site for the NOVA program Kaboom!.

EXAMPLE WORKSHEET (with answers)

Elements of the SUN

 Pablo Cortez  IHM

8-31-11 Wednesday

1st most abundant element of the SUN: Hydrogen
Symbol: H
Family: Alkali metals

2nd most abundant element of the SUN: Helium
Symbol: He
Family: Noble gasses

3rd most abundant element of the SUN: Oxygen
Symbol: O
Family: Nonmetals

4th most abundant element of the SUN: Carbon
Symbol: C
Family: Nonmetals

5th most abundant element of the SUN:  Nitrogen
Symbol: N
Family: Nonmetals

6th most abundant element of the SUN: Neon
Symbol: Ne
Family: Noble gasses

7th most abundant element of the SUN: Iron
Symbol: Fe
Family: Transition metals

8th most abundant element of the SUN: Silicon
Symbol: Si
Family: Nonmetals

9th most abundant element of the SUN: Magnesium
Symbol:  Mg
Family: Alkaline earth metals

10th most abundant element of the SUN: Sulfer
Symbol: S
Family: Nonmetals

 

Sources:

NOVA:  http://www.pbs.org/wgbh/nova/physics/periodic-table.html 

Data provided by PeriodicTable.com. Melting point, boiling point, and density data apply to elements at standard atmospheric pressure. 

 

 

Adhesive Investigation - Moo Glue

What makes glue, paste or tape stick to things? Adhesives are used to stick things together. Wood, paper and many other materials have tiny cracks and holes in them.

When we glue things together, sometimes the glue seeps into the tiny openings and hardens, making the materials stick together. Other times, the molecules on the surface of an object mix with the glue molecules, making the objects stick together.

Did you know you can make glue from milk? Try this investigation and the results will “stick” with you for a long time.

Notes: 

1) This is a neat investigation. It is not an "experiment." 

Experiments are a special type of investigation that requires manipulating variables in a controlled way. Investigations like this do not do so and are not experiments. Not all investigations are experiments.

2) This can get rather odoriferous.  You may NOT want to use this as an adhesive on any projects that you plan to keep. :-)

What You Need:

• A tall, clear glass
• Non-fat or skim milk
• White vinegar
• Coffee filters or paper towels
• 2 pieces of paper

What You Do:

1) In a glass, put seven tablespoons of non-fat or skim milk. Make sure to use low-fat milk because whole milk contains more fat, which can change the experiment results.
 

2) Add a tablespoon of white vinegar to the milk; you should see solids begin to form that are suspended in the liquid. The solids will have a grainy appearance.
 

3) In a about a minute, the mixture will separate and settle toward the bottom of the glass. Then drain the liquid off, using a coffee filter or paper towel.
 

4) Now, pat the solids with a paper towel to absorb any excess liquid. You can use the resulting slimy substance as glue!
 

5) Last, coat two pieces of paper with the milk slime, stick them together, and let it dry. How well does your homemade glue work compared to tape or other glues?

WHY DOES THIS WORK?   The science behind milk glue.

Milk is a colloid.  A colloid is a mixture of substances that do not settle out over time (like a mixture of sand and water would for example). 

Unlike a suspension (sand and water or orange juice and pulp) that mixes together when stirred or shaken then settles into separate parts when left at rest, a colloid does not settle because the particles that make it up are extremely tiny.

Looking at a glass of milk, one would not be able to see the particles that make it up, namely the curds (solid casein protein particles) and whey (liquid particles) because they are so small. 

So -- remember that the liquids are called whey and the solids are called curds. The curds are full of the protein called casein.

Interestingly, milk appears white even though the particles that make it up are mostly clear, because light is scattered by the tiny particles as it passes through the colloid. 

The milk was “curdled” when the acidic vinegar was added and lowered the pH of the milk, causing the casein particles to come out of the solution as solid chunks of curds floating in the liquid whey.  Gross - definitely don’t drink!

Glue can be made from lots of things like:
plant saps
animal bones and hides
cassava root
bread
fruit and other vegetables

Casein (that protein that is found in milk) was used by ancient Egyptians as a glue for boat building and to weatherproof airplanes during WWII. Casein is what makes the milk adhesive (or, "moo glue") work.

Exact Link Sources:
Ick Stick  author: Alicia Danyali
Curds and Whey author: Lori Stewart
General source: education.com

Science Quias

SCIENCE:
Chemistry - common elements:
http://www.quia.com/mc/65904.html

Atomic Structure: http://www.quia.com/rr/70834.html

30 Elements' Symbols (Matching Game)
http://www.quia.com/jg/907334.html

40 Elements' Symbols (Matching Game)
http://www.quia.com/jg/611032.html

Properties of Matter
http://www.quia.com/jg/611032.html

Periodic Table of Elements (Scavenger HUnt) check websites!
http://www.quia.com/sh/9629.html?AP_rand=642082197

Elemental Table (Rags to Riches)
http://www.quia.com/rr/41449.html

Atoms and Elements: http://www.quia.com/rr/41449.html



Cross posted @  http://homeschoolingnotebook.blogspot.com/2011/01/selected-quia-games-and-quizzes.html

Periodic Table Fun

A cool photographic Periodic Table: http://periodictable.com/
A fun Quiz

Periodic Table of Elements The periodic table is the most important reference a chemist has because it puts all the known elements into a meaningful pattern. Elements are arranged left to right and top to bottom in order of increasing atomic number. This order generally goes with increasing atomic mass. Click on an element for more information  (clicks take you to the Los Alamos National Laboratory site): Period 1 IA 1A 18 VIIIA 8A 1 1 H 1.008 2 IIA 2A 13 IIIA 3A 14 IVA 4A 15 VA 5A 16 VIA 6A 17 VIIA 7A 2 He 4.003 2 3 Li 6.941 4 Be 9.012 5 B 10.81 6 C 12.01 7 N 14.01 8 O 16.00 9 F 19.00 10 Ne 20.18 3 11 Na 22.99 12 Mg 24.31 3 IIIB 3B 4 IVB 4B 5 VB 5B 6 VIB 6B 7 VIIB 7B 8 9 10 11 IB 1B 12 IIB 2B 13 Al 26.98 14 Si 28.09 15 P 30.97 16 S 32.07 17 Cl 35.45 18 Ar 39.95 –––- VIII –––- –––- 8 –––- 4 19 K 39.10 20 Ca 40.08 21 Sc 44.96 22 Ti 47.88 23 V 50.94 24 Cr 52.00 25 Mn 54.94 26 Fe 55.85 27 Co 58.47 28 Ni 58.69 29 Cu 63.55 30 Zn 65.39 31 Ga 69.72 32 Ge 72.59 33 As 74.92 34 Se 78.96 35 Br 79.90 36 Kr 83.80 5 37 Rb 85.47 38 Sr 87.62 39 Y 88.91 40 Zr 91.22 41 Nb 92.91 42 Mo 95.94 43 Tc (98) 44 Ru 101.1 45 Rh 102.9 46 Pd 106.4 47 Ag 107.9 48 Cd 112.4 49 In 114.8 50 Sn 118.7 51 Sb 121.8 52 Te 127.6 53 I 126.9 54 Xe 131.3 6 55 Cs 132.9 56 Ba 137.3 57 La* 138.9 72 Hf 178.5 73 Ta 180.9 74 W 183.9 75 Re 186.2 76 Os 190.2 77 Ir 190.2 78 Pt 195.1 79 Au 197.0 80 Hg 200.5 81 Tl 204.4 82 Pb 207.2 83 Bi 209.0 84 Po (210) 85 At (210) 86 Rn (222) 7 87 Fr (223) 88 Ra (226) 89 Ac~ (227) 104 Rf (257) 105 Db (260) 106 Sg (263) 107 Bh (262) 108 Hs (265) 109 Mt (266) 110 Uun () 111 Uuu () 112 Uub () 114 Uuq () 116 - - - () 118 - - - ()   Lanthanide Series 58 Ce 140.1 59 Pr 140.9 60 Nd 144.2 61 Pm (147) 62 Sm 150.4 63 Eu 152.0 64 Gd 157.3 65 Tb 158.9 66 Dy 162.5 67 Ho 164.9 68 Er 167.3 69 Tm 168.9 70 Yb 173.0 71 Lu 175.0 Actinide Series 90 Th 232.0 91 Pa (231) 92 U (238) 93 Np (237) 94 Pu (242) 95 Am (243) 96 Cm (247) 97 Bk (247) 98 Cf (249) 99 Es (254) 100 Fm (253) 101 Md (256) 102 No (254) 103 Lr (257) The different rows of elements are called periods. The period number of an element signifies the highest energy level an electron in that element occupies (in the unexcited state). The number of elements in a period increases as one moves down the periodic table because as the energy level of the atom increases, the number of energy sub-levels per energy level increases.

In 1869, the Russian chemist Mendeleev noted that the repeating patterns of behavior could be arranged in a sequence of elements. This led to the first "Periodic Table" of the elements. Scientists and students who are familiar with the periodic table use the position in the table to extract information about individual elements. Chemistry in a Nutshell For a list of the element names and symbols in alphabetical order.

Another way to explain it:

The periodic table arranges the chemical elements into a pattern so that you can predict the properties of elements based on where they are located on the table. Elements are arranged from left to right and from top to bottom in order of increasing atomic number or number of protons in the element.
Rows of elements are called periods. The period number of an element signifies the highest unexcited energy level for an electron in that element. The number of elements in a period increases as you move down the periodic table because there are more sublevels per level as the energy level of the atom increases.

Columns of elements help define element groups. Elements within a group share several common properties. http://chemistry.about.com/library/blperiodictablekids.htm

A more complex way to explain it:

The periodic table is a chart of the elements arranged according to

the periodic law discovered by Dmitri I. Mendeleev and revised by Henry G. J. 

Moseley. In the periodic table the elements are arranged in columns and rows according to increasing atomic number (see the table entitled Periodic Table). The vertical columns, or groups, are numbered from I to VIII, with a final column numbered 0. Each group is divided into two categories, or families: one called the a series (the representative, or main group, elements); the other the b series (the transition, or subgroup, elements). 

 

All the elements in a group have the same number of valence electrons and hence similar chemical properties. 

 

The horizontal rows of the table are called periods. The elements of a period are characterized by the fact that they have the same number of electron shells; the number of electrons in these shells, which equals the element's atomic number, increases from left to right within each period. 

In each period the lighter metals appear on the left, the heavier metals in the center, and the nonmetals on the right. Elements on the borderline between metals and nonmetals are called metalloids.Group Ia (with one valence electron) and group IIa (with two valence electrons) are called the alkali metals and the alkaline-earth metals, respectively. 

 

Two series of elements branch off from group IIIb, which contains the transition elements, or transition metals; elements 57 to 71 are called the lanthanide series, or rare earths, and elements 89 to 103 are called the actinide series, or radioactive rare earths; a third group, the superactinide group (elements 122—153), is predicted to fall outside the main body of the table, but none of these has yet been synthesized or isolated. 

 

The nonmetals in group VIIa (with seven valence electrons) are called the halogens. 

The elements grouped in the final column have no valence electrons and are called the inert gases, or noble gases, because they react chemically only with extreme difficulty.

 

In a relatively simple type of periodic table, each position gives the name and chemical symbol for the element assigned to that position; its atomic number; its atomic weight (the weighted average of the masses of its stable isotopes, based on a scale in which carbon-12 has a mass of 12); and its electron configuration, i.e., the distribution of its electrons by shells. 

The only exceptions are the positions of elements 103 through 116; complete information on these elements has not been compiled. 

 

Larger and more complicated periodic tables may also include the following information for each element: atomic diameter or radius; common valence numbers or oxidation states; melting point; boiling point; density; specific heat; Young's modulus; the quantum states of its valence electrons; type of crystal form; stable and radioactive isotopes; and type of magnetism exhibited by the element (paramagnetism or diamagnetism).

 

See P. W. Atkins, The Periodic Kingdom: A Journey into the Land of Chemical Elements (1997).