Презентация на тему Дмитрий Менделеев

• 1 слайд

  Hardships
  Enrol
  Appointed
  Confirm
  Gallium
  Scandium
  Respectively
  Respect
  Mineral recovery
  Expansion of liquids
  Densities of gases
  Smokeless powder
  Endless
  Approve of
  Resignation
  
  Трудность
  Вступить в члены организации
  Назначать
  Подтверждать, одобрять
  Галий
  Скандий
  Соответственно
  Уважать, уважение
  Восстановление минерала
  Увеличение жидкости
  Плотность газа
  Бездымный порох
  Бесконечный
  Одобрять что-то
  Уход в отставку
  

• 2 слайд

  Complete the definitions below with the following words:
  Hardship, resign, confirmed, solution, density, enroll, appoint, resulted, expand, uniform
  
  1. They are going to … a new professor in the Chemistry department.
  2.Many famous people in the past suffered a lot of … to achieve their goals.
  3. The experiment provided that the gases had a … reaction, that is the same reaction.
  4. Most schools expect you to … before you begin your studies.
  5. The … of a substance is how thick and compact it is.
  6. If metal is heated you will see it … .
  7. It was a … made up of water and salt.
  8. If somebody is unhappy in their job, they may … .
  9. The experiment in the lab … in a huge explosion.
  10. The outcome of the experiment … his theory.
  

• 3 слайд

  Read the text and answer the questions in your own words.
  What position did Mendeleev achieve at the University of St Petersburg?
  Why did Mendeleev leave gaps in the periodic table of elements?
  How were Mendeleev’s predictions proven correct?
  What contribution did Mendeleev make in the area of solution?
  What did Mendeleev’s formula concerning gases explain?
  

• 4 слайд

  Answer the following questions
  What do you know about atoms and electrons?
  What do you know about chemical reactions?
  

• 5 слайд

  Listen to a teacher explaining to a class how electrons work. Then complete each sentence with one word.
  Mendeleev didn’t know about … .
  The periodic table arranged by Mendeleev was based on …
  Electrons are located in … around the nucleus of an atom…
  Valence electrons determine the … properties of an element.
  Lithium and … have only one valence electron.
  Lithium and boron have … electron shells.
  

• 6 слайд

  Discuss these questions with your partner
  Besides the nucleus and electrons, what else is found in an atom?
  Do you think scientists will discover any more elements?
  What is the role of periodic table?
  How does the modern periodic table work?
  

• 7 слайд