🗊Презентация Periodic Table and Trends

Категория: Химия
Нажмите для полного просмотра!
Periodic Table and Trends, слайд №1Periodic Table and Trends, слайд №2Periodic Table and Trends, слайд №3Periodic Table and Trends, слайд №4Periodic Table and Trends, слайд №5Periodic Table and Trends, слайд №6Periodic Table and Trends, слайд №7Periodic Table and Trends, слайд №8Periodic Table and Trends, слайд №9Periodic Table and Trends, слайд №10Periodic Table and Trends, слайд №11Periodic Table and Trends, слайд №12Periodic Table and Trends, слайд №13Periodic Table and Trends, слайд №14Periodic Table and Trends, слайд №15Periodic Table and Trends, слайд №16Periodic Table and Trends, слайд №17Periodic Table and Trends, слайд №18Periodic Table and Trends, слайд №19Periodic Table and Trends, слайд №20
Скачать
Вы можете ознакомиться и скачать презентацию на тему Periodic Table and Trends. Доклад-сообщение содержит 20 слайдов. Презентации для любого класса можно скачать бесплатно. Если материал и наш сайт презентаций Mypresentation Вам понравились – поделитесь им с друзьями с помощью социальных кнопок и добавьте в закладки в своем браузере.

Слайды и текст этой презентации

Слайд 1


Periodic Table & Trends
Описание слайда:
Periodic Table & Trends

Слайд 2


History of the Periodic Table 1871 – Mendeleev arranged the elements according to: 1. Increasing atomic mass 2. Elements w/ similar properties were put in the same row 1913 – Moseley arranged the elements according to: 1. Increasing atomic number 2. Elements w/ similar properties were put in the same column
Описание слайда:
History of the Periodic Table 1871 – Mendeleev arranged the elements according to: 1. Increasing atomic mass 2. Elements w/ similar properties were put in the same row 1913 – Moseley arranged the elements according to: 1. Increasing atomic number 2. Elements w/ similar properties were put in the same column

Слайд 3


Group Names
Описание слайда:
Group Names

Слайд 4


S & P block – Representative Elements S & P block – Representative Elements Metalloids (Semimetals, Semiconductors) – B,Si, Ge, As, Sb, Te (properties of both metals & nonmetals) Columns – groups or families Rows - periods
Описание слайда:
S & P block – Representative Elements S & P block – Representative Elements Metalloids (Semimetals, Semiconductors) – B,Si, Ge, As, Sb, Te (properties of both metals & nonmetals) Columns – groups or families Rows - periods

Слайд 5


Periodic Groups Elements in the same column have similar chemical and physical properties These similarities are observed because elements in a column have similar e- configurations (same amount of electrons in outermost shell)
Описание слайда:
Periodic Groups Elements in the same column have similar chemical and physical properties These similarities are observed because elements in a column have similar e- configurations (same amount of electrons in outermost shell)

Слайд 6


Periodic Trends Periodic Trends – patterns (don’t always hold true) can be seen with our current arrangement of the elements (Moseley) Trends we’ll be looking at: Atomic Radius Ionization Energy 3. Electronegativity
Описание слайда:
Periodic Trends Periodic Trends – patterns (don’t always hold true) can be seen with our current arrangement of the elements (Moseley) Trends we’ll be looking at: Atomic Radius Ionization Energy 3. Electronegativity

Слайд 7


Atomic Radius Atomic Radius – size of an atom (distance from nucleus to outermost e-)
Описание слайда:
Atomic Radius Atomic Radius – size of an atom (distance from nucleus to outermost e-)

Слайд 8


Atomic Radius Trend Group Trend – As you go down a column, atomic radius increases As you go down, e- are filled into orbitals that are farther away from the nucleus (attraction not as strong) Periodic Trend – As you go across a period (L to R), atomic radius decreases As you go L to R, e- are put into the same orbital, but more p+ and e- total (more attraction = smaller size)
Описание слайда:
Atomic Radius Trend Group Trend – As you go down a column, atomic radius increases As you go down, e- are filled into orbitals that are farther away from the nucleus (attraction not as strong) Periodic Trend – As you go across a period (L to R), atomic radius decreases As you go L to R, e- are put into the same orbital, but more p+ and e- total (more attraction = smaller size)

Слайд 9


Ionic Radius Ionic Radius – size of an atom when it is an ion
Описание слайда:
Ionic Radius Ionic Radius – size of an atom when it is an ion

Слайд 10


Ionic Radius Trend Metals – lose e-, which means more p+ than e- (more attraction) SO… Cation Radius < Neutral Atomic Radius Nonmetals – gain e-, which means more e- than p+ (not as much attraction) SO… Anion Radius > Neutral Atomic Radius
Описание слайда:
Ionic Radius Trend Metals – lose e-, which means more p+ than e- (more attraction) SO… Cation Radius < Neutral Atomic Radius Nonmetals – gain e-, which means more e- than p+ (not as much attraction) SO… Anion Radius > Neutral Atomic Radius

Слайд 11


Ionic Radius Trend Group Trend – As you go down a column, ionic radius increases Periodic Trend – As you go across a period (L to R), cation radius decreases, anion radius decreases, too. As you go L to R, cations have more attraction (smaller size because more p+ than e-). The anions have a larger size than the cations, but also decrease L to R because of less attraction (more e- than p+)
Описание слайда:
Ionic Radius Trend Group Trend – As you go down a column, ionic radius increases Periodic Trend – As you go across a period (L to R), cation radius decreases, anion radius decreases, too. As you go L to R, cations have more attraction (smaller size because more p+ than e-). The anions have a larger size than the cations, but also decrease L to R because of less attraction (more e- than p+)

Слайд 12


Ionic Radius
Описание слайда:
Ionic Radius

Слайд 13


Ionic Radius How do I remember this????? The more electrons that are lost, the greater the reduction in size. Li+1 Be+2 protons 3 protons 4 electrons 2 electrons 2 Which ion is smaller?
Описание слайда:
Ionic Radius How do I remember this????? The more electrons that are lost, the greater the reduction in size. Li+1 Be+2 protons 3 protons 4 electrons 2 electrons 2 Which ion is smaller?

Слайд 14


Ionic Radius How do I remember this??? The more electrons that are gained, the greater the increase in size. P-3 S-2 protons 15 protons 16 electrons 18 electrons 18 Which ion is smaller?
Описание слайда:
Ionic Radius How do I remember this??? The more electrons that are gained, the greater the increase in size. P-3 S-2 protons 15 protons 16 electrons 18 electrons 18 Which ion is smaller?

Слайд 15


Ionization Energy Ionization Energy – energy needed to remove outermost e-
Описание слайда:
Ionization Energy Ionization Energy – energy needed to remove outermost e-

Слайд 16


Ionization Energy Group Trend – As you go down a column, ionization energy decreases As you go down, atomic size is increasing (less attraction), so easier to remove an e- Periodic Trend – As you go across a period (L to R), ionization energy increases As you go L to R, atomic size is decreasing (more attraction), so more difficult to remove an e- (also, metals want to lose e-, but nonmetals do not)
Описание слайда:
Ionization Energy Group Trend – As you go down a column, ionization energy decreases As you go down, atomic size is increasing (less attraction), so easier to remove an e- Periodic Trend – As you go across a period (L to R), ionization energy increases As you go L to R, atomic size is decreasing (more attraction), so more difficult to remove an e- (also, metals want to lose e-, but nonmetals do not)

Слайд 17


Electronegativity Electronegativity- tendency of an atom to attract e-
Описание слайда:
Electronegativity Electronegativity- tendency of an atom to attract e-

Слайд 18


Electronegativity Trend Group Trend – As you go down a column, electronegativity decreases As you go down, atomic size is increasing, so less attraction to its own e- and other atom’s e- Periodic Trend – As you go across a period (L to R), electronegativity increases As you go L to R, atomic size is decreasing, so there is more attraction to its own e- and other atom’s e-
Описание слайда:
Electronegativity Trend Group Trend – As you go down a column, electronegativity decreases As you go down, atomic size is increasing, so less attraction to its own e- and other atom’s e- Periodic Trend – As you go across a period (L to R), electronegativity increases As you go L to R, atomic size is decreasing, so there is more attraction to its own e- and other atom’s e-

Слайд 19


Reactivity Reactivity – tendency of an atom to react Metals – lose e- when they react, so metals’ reactivity is based on lowest Ionization Energy (bottom/left corner) Low I.E = High Reactivity Nonmetals – gain e- when they react, so nonmetals’ reactivity is based on high electronegativity (upper/right corner) High electronegativity = High reactivity
Описание слайда:
Reactivity Reactivity – tendency of an atom to react Metals – lose e- when they react, so metals’ reactivity is based on lowest Ionization Energy (bottom/left corner) Low I.E = High Reactivity Nonmetals – gain e- when they react, so nonmetals’ reactivity is based on high electronegativity (upper/right corner) High electronegativity = High reactivity

Слайд 20


Metallic Character Properties of a Metal – 1. Easy to shape Conduct electricity 3. Shiny Group Trend – As you go down a column, metallic character increases Periodic Trend – As you go across a period (L to R), metallic character decreases (L to R, you are going from metals to non-metals
Описание слайда:
Metallic Character Properties of a Metal – 1. Easy to shape Conduct electricity 3. Shiny Group Trend – As you go down a column, metallic character increases Periodic Trend – As you go across a period (L to R), metallic character decreases (L to R, you are going from metals to non-metals

Скачать

Похожие презентации
Mypresentation.ru
Загрузить презентацию