DoubleBubble Map
Double Bubble Map
All known substances
can be classified as solids, liquids, gases, or plasma. In addition, a fifth
state of matter, the Bose-Einstein condensate has been discovered recently.
However, it is not stable at normal earth conditions. Likewise, although plasma
is the most abundant state of matter in the Universe, it is not common on the
Earth under normal conditions, except for lightning.An element is a pure
substance that cannot be decomposed into simpler substances by normal chemical
means. There are 109 different elements. Ninety of these are naturally
occurring; the rest have been created in laboratories. Elements 110 and 118 are
still being researched on. There will be more elements as technology can
identify them. A symbol is used to represent the full name of an element. For
example, H represents hydrogen; O represents oxygen, and Al represents
aluminum. Sometimes the Latin name for an element is used as the basis for its
symbol, for instance K represents potassium (kalium in Latin).
Compare means to find the
similarities or differences between two or more people or things. In this case, we will find
the similarities or differences between two elements in chemistry. Contrast means to compare in order to show
unlikeness or differences about elements.
A double bubble map is much like a
Venn Diagram. The two center circles hold the items being compared. The outside
bubbles hold items, descriptive phrases and other factors that describe only
the object to which they are connected. The bubbles on the inside that connect
to both center circles contain information that pertains to both the items in
the center circles. As a result, the double bubble map shows areas in which the
two items differ and others in which they share similar traits.
When comparing and contrasting, we use Double Bubble Maps. This is
similar in concept to a Venn Diagram. Two items being compared are written in
the two center circles. Outside bubbles show items that share qualities with
only one object - these are contrasting qualities. Center bubbles (that connect
to both circles) show similarities between the two items being compared.
The Bubble Map is
used for Describing using adjectives or phrases. It has a large
inside circle from which lines extend to smaller outside circles or
"bubble". Many of you might look at a Bubble Map and think it is a
web or cluster map. The difference is that the Bubble Map has one central idea
or term that is being defined. The connecting
"bubbles" contain the adjectives that describe the term. Use double bubble Map to compare the elements for
make easy to understand the similar and difference about elements. For example
:
What is the basic difference the compare and contrast?
BalasHapusCompare means to find the similarities or differences between two or more people or things. In this case, we will find the similarities or differences between two elements in chemistry. Contrast means to compare in order to show unlikeness or differences about elements.
HapusHow the silver making process?
BalasHapusSilver ore is crushed into pieces, usually with 1-1.5 in (2.5-3.75 cm) in diameter, to make the material porous. About 3-5 lb (1.4-2.3 kg) of lime per ton of silver ore is added to create an alkaline environment.
HapusSilver
The ore must be completely oxidized so that the precious metal is not limited in sulfide minerals. Where fine or clay exists, the ore is agglomerated to create a uniform recharge pile. This process consists of crushing ore, adding cement, mixing, adding water or cyanide solution, and healing in dry air for 24-48 hours.
Broken or crushed ore stacked on impermeable pads to eliminate the loss of the silver cyanide solution. Pad materials may be asphalt, plastic, rubber sheet, and / or clay. These bearings are tilted in two directions to facilitate drainage and collection of solutions.
Add a cyanide solution and heal
A solution of water and sodium cyanide is added to the ore. Solutions are sent to the embankment by a sprinkler system or inundation method, including gutter, injection, or seepage from capillaries.
Restore silver
Silver recovers from a pile of absorption solutions in one of several ways. The most common is the Merrill-Crowe rainfall, which uses good zinc dust to precipitate the precious metal from the solution. The silver deposit is then filtered, melted, and made into a bullion bar.
Another method of recovery is activated carbon sequestration, in which solutions are pumped through a tank or tower containing activated carbon, and the addition of a sodium sulfide solution, which forms a silver precipitate. In other methods, the solution is passed through an attractive silver charged resin material. Recovery methods are generally set based on economic factors.
Where to find Ag and Au?? Thanks
BalasHapusAg can occurs naturally in its pure form, free form (native silver), as an alloy with gold and other metals, and in minerals such as argentite and chlorargirit. Most silver is produced as a by-product of copper, gold, tin, and zinc mining.
HapusAu is found in many gold nuggets or powders in rocks and in alluvial deposits and one of the coinage metals. The ISO code is XAU. Gold melts in liquid form at a temperature of about 1000 degrees Celsius.