Showing posts with label Chemistry. Show all posts
Showing posts with label Chemistry. Show all posts
Sunday, January 23, 2011
Sunday, January 9, 2011
Selected Quia Games and Quizzes
http://www.quia.com/shared/
SPANISH:
Spanish pronouns: http://www.quia.com/mc/322547.html
Adjectives:
http://www.quia.com/mc/66063.html
Food and Drinks: http://www.quia.com/cb/28652.html
Body Parts:
http://www.quia.com/quiz/794975.html?AP_rand=578159630
Colors:
http://www.quia.com/hm/163554.html
Days of the Week: http://www.quia.com/jw/116339.html?AP_rand=1357339885
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
CIVICS:
Bill of Rights (First 10 Amendments)
http://www.quia.com/pp/43250.html?AP_rand=1395570334
Rags to Riches version: http://www.quia.com/rr/686920.html
Matching Version: http://www.quia.com/mc/2049564.html
Bill of Rights Vocabulary: http://www.quia.com/rr/686921.html
5th Grade - Branches of Government:
http://www.quia.com/rr/103659.html
Election Process: http://www.quia.com/rr/580312.html
How a Bill Becomes a Law:
http://www.quia.com/rd/194382.html?AP_rand=300886918
Constitution and History:
http://www.quia.com/jg/2068207.html
MATH:
5th grade math vocab
http://www.quia.com/jg/2068207.html
WORLD HISTORY:
Short ancient timeline
http://www.quia.com/rd/37561.html?AP_rand=875454615
SPANISH:
Spanish pronouns: http://www.quia.com/mc/322547.html
Adjectives:
http://www.quia.com/mc/66063.html
Food and Drinks: http://www.quia.com/cb/28652.html
Body Parts:
http://www.quia.com/quiz/794975.html?AP_rand=578159630
Colors:
http://www.quia.com/hm/163554.html
Days of the Week: http://www.quia.com/jw/116339.html?AP_rand=1357339885
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
CIVICS:
Bill of Rights (First 10 Amendments)
http://www.quia.com/pp/43250.html?AP_rand=1395570334
Rags to Riches version: http://www.quia.com/rr/686920.html
Matching Version: http://www.quia.com/mc/2049564.html
Bill of Rights Vocabulary: http://www.quia.com/rr/686921.html
5th Grade - Branches of Government:
http://www.quia.com/rr/103659.html
Election Process: http://www.quia.com/rr/580312.html
How a Bill Becomes a Law:
http://www.quia.com/rd/194382.html?AP_rand=300886918
Constitution and History:
http://www.quia.com/jg/2068207.html
MATH:
5th grade math vocab
http://www.quia.com/jg/2068207.html
WORLD HISTORY:
Short ancient timeline
http://www.quia.com/rd/37561.html?AP_rand=875454615
Monday, September 27, 2010
Periodic Table Fun
A cool photographic Periodic Table: http://periodictable.com/
A fun Quiz
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:
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):
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).
Wednesday, February 10, 2010
Meet the Elements
Iron is a metal
You see it every day
Oxygen eventually
Will make it rust away
Carbon in it's ordinary form is coal
Crush it together and diamonds are born
Come on come on and meet the elements
May I introduce you to our friends the elements?
Like a box of paints
that are mixed to make every shade
They either combine to make a chemical compound
Or stand alone as they are
Neon's the gas that lights up the sign for a pizza place
The coins that you pay with are copper, nickel and zinc
Silicon and oxygen make concrete, bricks and glass
Now add some gold and silver for some pizza place class
Come on come on and meet the elements
I think you should check out the ones they call the elements
Like a box of paints that are mixed to make every shade
They either combine to make a chemical compound
Or stand alone as they are
Team up with other elements
Making compounds when they combine
Or make up a simple element
Formed out of atoms of the one kind.
Balloons are full of helium
And so is every star
Stars are mostly hydrogen
Which may someday fuel your car
Hey who let in all these elephants?
Did you know that elephants are made of elements?
Elephants are mostly made of four elements
And every living thing is mostly made of four elements
Plants, bugs, birds, fish, bacteria and men
Are mostly carbon, hydrogen, nitrogen and oxygen
Come on come on and meet the elements
You and I are complicated but we're made of elements
Like a box of paints that are mixed to make every shade
They either combine to make a chemical compound
Or stand alone as they are
Team up with other elements
Making compounds when they combine
Or make up a simple element
Formed out of atoms of the one kind.
Come on come on and meet the elements
Check out the ones they call the elements
Like a box of paints that are mixed to make every shade
They either combine to make a chemical compound
Or stand alone as they are
SOURCES: http://lyrics.url.com/show/6645/they-might-be-giants/meet-the-elements-lyrics
and
http://www.sciencefriday.com/program/archives/200911273
and
http://www.youtube.com/watch?v=d0zION8xjbM&feature=player_embedded
Friday, January 15, 2010
Periodic Table Memory Pegs
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©John P. Pratt, all rights reserved
Icons drawn by David R. Pratt
16 September 1997
updated 2 Feb 2006 to show data better with mouse
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Atomic Number Memory Pegs: 1-20
















16. Sulfuric Acid (Sulfur S). One pint (16 oz.), pale yellow in a flask.


18. Argon-filled Fluorescent Light (Argon Ar). 18-inch, sky-blue (air is 1% argon).


Atomic Numbers 1-20 41-60 61-80 81-105
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Atomic Number Memory Pegs: 21-40



23. Chev Van (Vanadium V). 23-passenger van made with vanadium steel.

24. Chrome-plated Creamer (Chromium Cr). 24-oz. pitcher of cream

25. Autumn Mangos (Manganese Mn). 25 of them,

26. Ferris Wheel (Iron Fe). 26-seats and made of iron. Sounds like "ferrous," which refers to iron.

27. Cobblestone (Cobalt Co). It is a 3" cube, so it has a volume of 27 cubic inches.




31. Galleon (Gallium Ga). The old Spanish galleons had three masts, each of which looked like a "1," to remind us of 31.






37. Superb ruby (Rubidium Rb). red ruby, 37-carat.

38. Israeli Strongbox (Strontium Sr). Bright red because the red in most fireworks is from strontium. It weighs 38 pounds.

39. A Tree (Yttrium Y). Y-shaped, with a "39" carved in it. Sounds like yttrium.

40. Ezra's Zircon Ring (Zirconium Zr). Only cost $40.
Atomic Numbers 1-20 41-60 61-80 81-105
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Atomic Number Memory Pegs: 41-60





45. Road in Rhode Island. (Rhodium Rh). Speed Limit 45 m.p.h.

46. Top dog Palace (Palladium Pd). The sultan has 46 wives in its 46 towers, which look like 46.

47. Agnes's Silver Dime (Silver Ag). '47 was A Good year after WW II. (Silver is "argentum" in Latin).




51. Ant money. (Antimony Sb). Taking small bills ($5 and $1) to its passbook account.






57. Lantern (Lanthanum La). 57 candle-power.

58. Cereal bowl (Cerium Ce). Has 58 nutrients.

59. Praying mantis (Praseodymium Pr). Eats 59 bugs.

60. No Dim Lights (Neodymium Nd). Triangular sign has 60° angles. Bright lights can blind.
Atomic Numbers 1-20 21-40 61-80 81-105
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Atomic Number Memory Pegs: 61-80



63. European rope (63 feet long). (Europium Eu).

64. Magdalene's Cattle (Gadolinium Gd). "Cattle" sounds like "gadol"inium. Checkerboard pattern (a checkerboard has 8x8 = 64 squares).

65. Bright blue turban (Terbium Tb). 65" long.

66. Dandy disposal (Dysprosium Dy). Disposes garbage in 6.6 seconds.

67. Home (Holmium Ho). This home has room for 6 or 7 children.




71. Lute (Lutetium Lu). 7 Strings on 1 Lute (71).






77. Iridescent Rainbow (Iridium Ir). 7 Colors in a rainbow (77). Iris was the Greek goddess of the rainbow.

78. Platinum Record (Platinum Pt). The old kind that rotated at a speed of 78 rpm. Recorded by "The Egyptians." A platinum recording sold more copies than a gold, and platinum is worth more than gold.

79. Gold Coin (Gold Au). A '79 A.U. (Almost Uncirculated.) The latin word for gold is aurum.

80. High-grade Thermometer (Mercury Hg). Showing 80 degrees.
Atomic Numbers 1-20 21-40 41-60 81-105
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Atomic Number Memory Pegs: 81-105



83. Pepto Bismol (Bismuth Bi). I "ate 3" teaspoons of Pepto Bismol (sounds like "83"). Pepto Bismol contains Bismuth Subsalicylate.

84. Polo Stick (Polonium Po). 7 dozen (84) polo sticks.

85. A tall Aster [85 petals] (Astatine At). The flowers, stem and leaf form an "85".

86. Radar warning. (Radon Rn). Protection for 86 miles.

87. France's Eiffel Tower (Francium Fr). Built for the World's Fair and commemorated the centenniel of the French Revolution which technically began in 1787.




91. Paper protractor (Protactinium Pa). Measuring 91°, one degree more than a right angle. Use it to measure the angle of the thorns next to it.






97. Rib knit Beret (Berkelium Bk). '97 style. Named for Berkeley, California, where berets have been seen.

98. Cauli-flower (Californium Cf). Remember Berkeley, California, are consecutive and that there is a 98 hidden in the cauliflower. California produces a lot of cauliflower.

99. Einstein's esoteric earrings. (Einsteinium Es). The hidden meaning is that his theory predicts you can only go 99% of the speed of light.

100. Fur mink (Fermium Fm). "Fur" sounds like fermium. It cost 100 thousand dollars and is 100% real fur from mink.

101. Mental M.D. (Mendelevium Md). They work on brains. Mental MD's all took Psychology 101.

102. No Bell (Nobelium No). The red bar divides the picture into two parts, to remember 102.

103. Laurel Wreath. (Lawrencium Lr). It has 103 leaves, and this one was also made with bulrushes.

104. Ruth's perfect Ford. (Rutherfordium Rf). It has 4 wheels and Ford sounds like "four" to remember 104. The Model-T was so "perfect" that is was popular for many years.

105. Hand. (Hahnium Ha). Has 5 fingers, for 5 more than 100
.
Atomic Numbers 1-20 21-40 41-60 61-80
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Using Atomic Number Memory Pegs
Many memory aid systems use memory "pegs," which are pictures used to remind you of numbers.- First, memorize the first twenty pictures, especially the association with the numbers.
- Then, to memorize twenty objects in order, simply think of a picture using each item with one of these 20 previously memorized pictures, and it is easy to remember the objects in order.
For example, using the fire hydrant picture for number one, you could think of the first object as being balanced on top of a hydrant, or being soaked by a hydrant, or perhaps with a hydrant on top of the object.
When I took a memory pegs course, I was struck by how senseless the twenty items were, that we were told to memorize, so I tried to think of a list of numbers that are identified with something in nature. My answer is to use the Atomic Numbers! Every element in nature has a number associated with it called the atomic number. I have thought of a set of pictures for 105 objects, which has these features:
- Each picture reminds you of the element's name.
- Each picture reminds you of the number.
- Each name or description reminds you of the element's chemical symbol.
The first twenty, which are the most important elements and also most common numbers, also have these two features:
- Each picture is an example of the use of that element.
- Each picture is represented by a different color.
That is, the most common organic elements are oxygen, carbon, nitrogen and hydrogen and the have the common colors: white, black, red and blue.
The abbreviations are in bold, the colors are in italics, and similar sounds are underlined.
When you memorize them, it is important to
- associate the number with the picture, and then as a secondary step,
- associate the picture with the element.
Atomic Numbers 1-20 21-40 41-60 61-80 81-105
SOURCE: John P Pratt (Mormon)
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