Teacher and student dialogue about chemical elements
Teacher: good morning !!!
Student: morning sir
Teacher: well today we will learn about element chemistry!
Student: i want to ask sir
"Element chemistry pack how many parts sir?
Teacher: the chemical element consists of metal, semi-metal and non-metallic elements
Student: then how do we analyze that it is metal and non metal elements?
Teacher: usually the metal is in Group I A and II A while non-metal in Group VIII A.
Student: then what is the difference between metal and non metal?
Teacher: to distinguish it we can see from its form for the metal it is a solid solid for the non-metals are gas and liquid.
Student: what do you think is what happens if metal reacts with metal? And why it can happen?
Teacher: if the metal is reacted with the metal it will not react it because it is in the same phase and the structure and molecule are almost the same.
Student: then what if non metals are reacted with metal?
Teacher: if metal is engaged with non metals will produce bond and will experience a chemical reaction
Student: thank you sir for today!
Teacher: well let's continue our lesson!
this is my chanel https://www.youtube.com/watch?v=mxvYPcyMV7o
Student: morning sir
Teacher: well today we will learn about element chemistry!
Student: i want to ask sir
"Element chemistry pack how many parts sir?
Teacher: the chemical element consists of metal, semi-metal and non-metallic elements
Student: then how do we analyze that it is metal and non metal elements?
Teacher: usually the metal is in Group I A and II A while non-metal in Group VIII A.
Student: then what is the difference between metal and non metal?
Teacher: to distinguish it we can see from its form for the metal it is a solid solid for the non-metals are gas and liquid.
Student: what do you think is what happens if metal reacts with metal? And why it can happen?
Teacher: if the metal is reacted with the metal it will not react it because it is in the same phase and the structure and molecule are almost the same.
Student: then what if non metals are reacted with metal?
Teacher: if metal is engaged with non metals will produce bond and will experience a chemical reaction
Student: thank you sir for today!
Teacher: well let's continue our lesson!
this is my chanel https://www.youtube.com/watch?v=mxvYPcyMV7o
Is there a non metal reaction with non metal?
BalasHapusFor example Carbon reaction with Clor: reaction requires heat (is endothermic)
HapusC (s) + 2Cl2 (g) -> CCl4 (l)
Phosphorus reaction with clor: phosphorus phased heating in a chlorine-slow stream produces PCl3.
2P (s) + 3Cl2 (g) -> 2PCl3 (l)
If the chlorine is reacted excessively, it will produce PCl5 solids in pale yellow.
2P (s) + 5Cl2 (g) -> 2PCl5 (s)
hi eka , according to the dialogue
BalasHapusi want to know about example of metal , can you mention some metal ? and the reaction thank you
1137/5000
HapusCopper (Cu): power cable, coil dynamo
Manggan (Mn): As a steel alloy material
Nickel (Ni): electric appliance, coated steel
Uranium (U): ammunition and weaponry materials
Almunium (Al): Loading mtor machine etc.
Chromium (Cr): heat-resistant workpiece and corrosion
Magnesium (mG): Prevent corrosion of iron pipes in the ground and walls of ships
Cobalt ((Co): heat resistant construction
White Tin (Sn): Food wrapping
Wolfram (W): Lighting electrode, spring
Lead (Pb): Cell-cell maker accu
Zinc (Zn) etc: The raw material of the paint maker
An example of a metal reaction is when Alkali metals react with water to form hydroxide compounds and H2 gas. If M is an alkali metal, then the reaction can be written as follows:
2M (s) + H2O (l) -> 2MOH (aq) + H2 (g)
The reaction progresses with the increase of atomic number from Li to Cs. This is caused in a group from top to bottom the number of skin more and more so that it is easier to release the outer electron which will be used to bind to the elements or other compounds.
Example of reaction of alkali metal with water.
What is the characteristic of the element?
BalasHapus1. The symbol of the element is taken from the abbreviation of the element name. Some elemental symbols are derived from Latin or Greek names of these elements. For example Fe of the word ferrum (Latin) as a symbol of iron element.
Hapus2. The symbol of the element is written with one capital letter.
3. For Elements denoted by more than one letter, the first letter of the symbol is written in capital letters and the second / third letter is written in lowercase.
4. Elements that have names with the first letter are the same, the first letter of the element symbol is taken from the first letter of the element name and the second letter is taken from another letter contained in the name of the element. For example, Ra for radium and Rn for radon.
Why metal moving with metallic metal will not produce bond and will experience chemical reaction ??
BalasHapusBecause From the theory of cloud or ocean electrons the metal bond is defined as the tensile force between the positive charges of metal ions (metal cations) with the negative charge formed from the valence electrons of the metal atoms. Thus a metal having more valence electrons will produce a cation with a larger positive charge and an electron cloud with more or more number of electrons. This causes the metal to have a stronger bond than metal composed of metal atoms with fewer valence electrons.
HapusTry to explain how the difference between compound and element?
BalasHapusElements are substances that can not be decomposed into two or more substances, by simple chemical changes. Elements are divided into three parts, namely metal, non metal, and metaloid.
HapusCompounds are substances similar to those of two or more elements forming a unity of properties and bonding in a chemical bond with a particular composition and can be described by simple chemical processes