Double Bubble Maps
Ø Bubble
Maps
Used to describe qualities
using adjectives ("sparkle words") and adjectives phrases. As a
writing tool it enriches abilities to identify qualities and use descriptive
words. In the center circle, write the word or thing being described.
1.
Sodium
Sodium is a chemical element in
the periodic table having Na symbols and atomic number 11. Sodium is a soft,
silvery, and waxy reactive metal, which belongs to alkali metals which are
widely present in natural compounds (especially halite). He is very reactive,
the flame is yellow, oxidizes in air, and reacts strongly with water, so it
must be stored in oil. Because it is so reactive, sodium is almost never found
in pure form.
·
The
main properties
Like other alkali metals,
sodium is a soft, light, silvery reactive element, which never takes the form
of a pure element in nature. Sodium floats in water, decomposing it into
hydrogen gas and hydroxide ions. If it is crushed into a powder, sodium will
explode in water spontaneously. However, it usually does not explode in air
under temperature 388 K. Sodium also when in a state bound to OH-ion will form
a strong base that is NaOH.
2.
The properties of Lithium: Hazards and Characteristics
·
Danger:
Lithium is corrosive, causing the skin to burn, because when this metal gets in contact with moist air it produces lithium hydroxide. Women who use lithium carbonate to treat bipolar disorder during treatment during pregnancy may be able to cause birth defects.
Lithium is corrosive, causing the skin to burn, because when this metal gets in contact with moist air it produces lithium hydroxide. Women who use lithium carbonate to treat bipolar disorder during treatment during pregnancy may be able to cause birth defects.
·
Characteristics:
Lithium is a soft metal, silvery white and less dense. The metal is highly reactive and is not found freely in nature.
Lithium is a soft metal, silvery white and less dense. The metal is highly reactive and is not found freely in nature.
When the surface is cut (or scratched) it quickly
oxidizes the air to form a black oxide layer. Lithium is the only alkali metal
that reacts with nitrogen at room temperature, forming a lithium nitride.
Lithium burns with a red flame, but if the amount is
enough, the fire can be brilliant white.
what form Na is found in nature
BalasHapusThe most important sodium salts found in nature are sodium chloride (rock salt or rock salt), sodium carbonate (trona or soda), sodium borate (borax), sodium nitrate and sodium sulfate. Sodium salt is found in seawater (1.05%), salted lakes, alkaline lakes and spring mineral water. .
HapusWhat is the character of the two elements?
BalasHapusThe characteristics of sodium:
Hapus1. Na symbol, atomic number 11
2. Included into class IA, alkali metals
3. atomic mass 22,989,770 (2) g / mol
4. Physically light, silvery white, floats in water, soft as candles
5. Sodium can be made from a simple reaction that is the process of electrolysis. Way, used NaCl or more we know as salt kitchen. The beginning of NaCl melted first, well, this NaCl melt that we use to make sodium.
6. From the reaction made, will produce liquid sodium which will be stored in kerosene. This liquid sodium can not be stored in water because it will explode.
The lithium element has the following characteristics:
• Has an atomic mass of 6.941 sma
• Has atomic number 3
• Has an atomic radius of 1.55 Å
• Has a 2 1 electron configuration
• In the compound having +1 oxidation number
• Has an atomic volume of 13.10 cm3 / mol
• Has a bcc crystal structure
• Has a boiling point of 1615 K
• Has a melting point of 453.7 K
• Has a density of 0.53 grams / cm3
• Has a heat capacity of 3.582 J / g K
• Has an ionization potential of 5.392 volts
• Has 0.98 electronegativity
• Has 11.7 × 106 ohm 1cm-1 electrical conductivity
• Has a heat conductivity of 84.7 W / m K
• Has an enthalpy price of 3.0 kJ / mol formation
• Has an enthalpy evaporative value of 147.1 kJ / mol
Can you give me the chemical properties of lithium and sodium?
BalasHapusThe chemical properties of sodium
Hapus- Is a reactive metal, widely present in natural compounds (especially halite)
- Fire is yellow, oxidizes in air, and reacts strongly with water, so it must be stored in oil.
- Because it is so reactive, sodium is almost never found in pure form.
- Sodium floats in water, decomposing it into hydrogen gas and hydroxide ions. If it is crushed into a powder, sodium will explode in water spontaneously. However, he usually does not explode in the air under 388 K.
- Sodium also when in the state of binding to the OH-ion will form a strong base that is NaOH
The lithium chemical properties are:
· Name: Lithium
· Symbols: Li
· Atomic number: 3
· Mass Number: 6.941 g / mol
· Keelektronegatifias (Pauli): 1
· Van Der Walls radius: 0.145 nm
· The radius of the ion: 0.06 nm
· Isotopes: Li6 and Li7
· Electron configuration: 1s2 2s1
· Energy ionization: 520.1 kJ / mol
· Standard potential: -3.02 V
· Discovered by: ohann Arfvedson in 1817
· Crystal structure: cubic body center
Elements of li include metallic or non-metallic groups ?
BalasHapusLithium is a chemical element in the periodic table that has the symbol Li and atomic number 3. This element is included in the alkali metal with a silver white color.
Hapus