COMPARE AND CONTRAST
(SAME AND DIFFERENCE
1. Compare
compare is
looking for similarities between two or more of a case. in chemistry usually
compared to the equation is that there are elements In nature both metallic and
non-metallic. examples of calcium and magnesium equation
CALCIUM
2. Contrast
contrast is also a comparison between two or more of a case.
were compared in contrast is the difference.
for example, the difference between the chemical elements such as potassium and strontium.
potassium
strontium
NATURE OF PERIODIC ELEMENTS
1. ATOM FINGERS
The
image in this bawwah shows the data of atomic radius. The radius of the atom is
the distance of the outer electron to the nucleus of the atom and shows the
size of an atom. The radius of the atom is difficult to measure so that the
measurements of the radius of the atom are done by measuring the distance
between the two nuclei of each other's bonded atom. In one class, the radius of
the atoms increasingly upward tend to be smaller. This happens because the more
up, the smaller the electron shell. In one period, the right to the radius of
the atom tends to be smaller. This happens because the more to the right the
number of protons and the number of electrons increases while the number of
outer shells filled with electrons remains the same so that the pull of the
nucleus to the electrons is stronger.
2. KEELEKTRONEGATIFAN
Electronegativity
is the tendency of an atom to attract electrons. The relative price of
electrogens is relative (a price comparison of an atom to another atom). One
definition of electronegativity is Pauling's definition of quantitative-scale
data. The trend of electronegative values of elements In one class, the price
of electronegativity from the bottom up is greater. In one period, from left to
right the greater the price of electronegativity. The price of the
electronegativity is important to determine the oxidation number (oxidation) of
the element in a compound. If the price of electronegativity is large, the
corresponding elements tend to accept electrons and form a negative oxidation
number. If the price of electronegativity is small, the cenderun element
releases the electrons and forms a positive oxidation number. The number of
bonded atoms depends on the valence electrons (to be discussed in the chemical
bond section). Thus the periodic nature of the element, the electronegativity
is a number that describes the relative tendency of an element to attract an
electron to its side in a chemical bond.
3. ENERGY IONIZATION (EI)
The
ionisation energy is the minimum energy required of the neutral atom in the
form of a gas to release an outer (weakest attached) electron to form a
positive ion. The release of the second electron (from the positive ion one) is
called the second ionisation energy, the release of a third electron is called the
third ionization energy, and so on. Stages of electron discharges can be
described as follows:
M (g) → M + (g) + e- Ei-1
M + (g) → M2 + (g) + e- Ei-2
The
price of ionisation energy is affected by the radius of the atom and the number
of valence electrons or nuclear charge. The smaller the radius of the atom, the
price of ionization energy will be greater. The larger the nuclear charge, the
energy of the ions will tend to increase.
4. ELECTRONIC AFITITY
Electron
affinity is the energy liberated by one atom in the form of a gas when it
receives an electron. The price of electron affinity is difficult to determine
directly.
5. METAL AND NONLOGAM PROPERTIES
Chemically,
metallic properties are associated with electropositive, ie the tendency of
atoms to release electrons to form positive ions. Thus, the properties of the
metal will depend on the ionization energy. The greater the ionisation energy,
to release the electrons, and the less the metal properties. In contrast,
non-metallic properties are associated with electronegativity, ie the tendency
of atoms to attract electrons. In accordance with the tendency of ionization
and electronegativity energy discussed above, the metallic and nonmetal
properties in the periodic system of elements are as follows:
1. From left to right
in a period, the metal properties decreases, while its non-metamic properties
increase.
2. From top to bottom
in one class, the nature of the metal increases, while the non-metallic
properties decreases.
Thus,
the metal element lies in the lower-left part of the periodic system of
elements, while the non-metallic element lies on the right-top. However, the
most non-metamic is the VIIA group, not the VIIIA group. The element located in
the middle, the element located in the boundary between the metal and
non-metal, has a metal and non-metallic properties. These elements are called
metalloids. Examples are boron and silicon.
6. KEREAKTIFAN (EASY TO APPLY)
The reactivity of an
element depends on its tendency to release or attract electrons. Thus, the most
reactive metal element is group IA (alkali metal), whereas the most reactive
non-metal is the VIIA group (halogen). From left to right in one period, first
the clarity decreases and then increases to the VIIA group. Group VIIIA is not
reactive.
DOUBLE BUBLE MAPS
· What are the similar and different qualities of these things?
· What qualities of each thing correspond to one another? In what way?
· Thinking process:
ü This map is useful in comparing and contrasting two
ü things. It allows for qualities that are shared to be placed in
ü between the two items while differences are placed on the
ü outside of the items.
ü Unlike the bubble map, the words in the circles do not
ü need to be limited to adjectives. You may use any words or
ü phrases that are appropriate.
ü Color coding the similarities/differences may make the
ü relationships more obvious to see.
· How to create this map:
ü Near the center of your work space write the names of the two things that are being described.
Each item should be in its own circle with space between the circles for details.
ü In the middle of the two things being compared, write the common qualities.
Each quality should have its own circle and
should be connected with a line to the original item circles.
ü On the outside of each original circle,
you should write descriptions that are unique to each item.
Every idea should each have its own circle and should only be connected with
a line to what it describes.
Aurum (GOLD ) vs Argentum ( SILVER )
Comparebetween Gold and Silver are :ü Gold same like Silver they both are Metalü We know they are element of group transitoinü They are shiningü Gold same like Silver they are jewelleryü Gold as solid as Silver
Contrastbetween Gold and Silver are :ü The Gold colour contras with The Silver colour.Because the colour of aurum gold while the argentums silverü argentums is not aslimited as aurumü aurum more heavy than argentumü The atomic number of aurum higher than argentumü aurum more expensive than argentum
I want to ask, what is the difference aurum with silver by nature to react with other elements?...
BalasHapusGold and silver can form complex compounds also react with halogens, gold is salh one inert compound but silver not inert
Hapushow to compare the element in group IA with element of the group of VIIA?
BalasHapusFor example, compare by nature, in the form of physical properties such as boiling point and chemical properties such as reactivity
Hapuswhat the meaning "double bubble maps" ?
BalasHapusIs a map that is Used to Compare and Compare, the third map to be introduced is Dual Wave Map. This map is created with two Bubble Maps. Two large circles are drawn with comparable objects. The central bubble is added to show the similarity between the two. The outer bubbles are drawn into two larger circles with words that show the difference.
HapusWhat similarities sodium metal and chlorine?
BalasHapusThe equation is the main group, and is in a period of period 3, and can form salt
Hapuswhat your opinion about make compare and contrast of the same matter
BalasHapusCompare is to compare two or more things based on the equation.
HapusWhile contrast is to compare two or more things based on the difference.
Hi munik,
BalasHapusI want to ask you, Aurum and argentium has grup same, what is grup?
Aurum and argentum lie in group 1B
Hapuswhat is Contrast between Gold and Silver ?
BalasHapusThe contrast between Gold and Silver is:
HapusContrasting gold color with The Silver color.
Because of the gold color of aurum while silver argentum
Argentums are not aslimited as aurum
Aurum is heavier than argentum
The number of aurum atoms is higher than argentum
Aurum is more expensive than argentum
How to use double map to make easy think proses?
BalasHapusDouble buble map is used to make it easier for us to analyze apasaja differences and equations with one another, how to use it is to draw 2 circles or other forms and then combined the left side and kana is the difference, while the middle is the equation.
Hapus