Алки: Химические Реакции
12 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Какова функция языка в ротовой полости?

  • Определение текстуры и температуры пищи
  • Выделение слюны
  • Разделение пищи на мелкие части
  • Перемещение пережеванной пищи в глотку (correct)
  • Какие кости в голове могут двигаться?

  • Только нижняя челюсть (correct)
  • Зубы
  • только верхняя челюсть
  • верхняя и нижняя челюсть
  • Какое количество зубов у взрослого человека?

  • 20
  • 32 (correct)
  • 40
  • 24
  • Какова функция губ в ротовой полости?

    <p>Определение текстуры и температуры пищи</p> Signup and view all the answers

    Какие железы secreting слюну в ротовой полости?

    <p>Все три: parotid, sublingual и submandibular</p> Signup and view all the answers

    Что происходит с пищей в результате действия зубов?

    <p>Только механическое измельчение</p> Signup and view all the answers

    В какой форме язык манипулирует пережеванной пищей?

    <p>Болус</p> Signup and view all the answers

    Что происходит с болусом, когда он проходит через фаринкс?

    <p>Эпиглоттис закрывает трахею</p> Signup and view all the answers

    Какие волны двигают болус в желудок?

    <p>Перистальтические волны</p> Signup and view all the answers

    Какова роль слюны в процессе пищеварения?

    <p>Слюна растворяет химические вещества еды для вкуса</p> Signup and view all the answers

    Что происходит с едой после того, как она была пережевана?

    <p>Еда проходит в пищевод</p> Signup and view all the answers

    Какова функция рта в процессе пищеварения?

    <p>Рот инициирует процесс пищеварения, разбивая еду на более легко перевариваемую форму</p> Signup and view all the answers

    Study Notes

    Alkanes: Chemical Reactions

    Alkanes are hydrocarbon compounds with general formula CnH2n+2, where n is the number of carbon atoms. They are the simplest organic compounds and are the major components of petroleum and natural gas. Alkanes undergo various chemical reactions, which are crucial in industrial processes and everyday life.

    Combustion Reactions

    Alkanes combine with oxygen to form carbon dioxide and water during combustion reactions. This process releases energy in the form of heat and light, making alkanes a valuable fuel source.

    Addition Reactions

    Alkanes undergo addition reactions, where two or more molecules combine to form a single molecule. One notable example is the addition of hydrogen to an alkane in the presence of a catalyst, forming an alkane with one additional hydrogen atom. This reaction is called hydrogenation.

    Substitution Reactions

    In substitution reactions, an atom or a group of atoms in an alkane is replaced by another atom or a group of atoms. This can occur through reactions with halogens (e.g., chlorine, bromine, and iodine) or through the addition of a hydroxyl group (–OH) to form alcohols.

    Elimination Reactions

    Elimination reactions involve the removal of atoms or molecules from an alkane, often resulting in the formation of a new C=C bond. This reaction type is significant in the formation of alkenes, which have one less hydrogen atom per carbon atom than alkanes.

    Polymerization

    Alkanes can also undergo polymerization reactions, where the molecules combine to form long chains of repeating units. This process forms polymers, which are essential in various industries and applications, such as plastics and resins.

    Hydrolysis

    Hydrolysis is the process of breaking a chemical compound into two or more simpler compounds using water. In the case of alkanes, hydrolysis may involve breaking the carbon-carbon bonds, leading to the formation of smaller alkanes and/or other organic compounds.

    Oxidation and Reduction

    Alkanes can undergo oxidation and reduction reactions, where they lose or gain electrons, respectively. These reactions can lead to the formation of various organic compounds, such as ketones, aldehydes, and carboxylic acids.

    In conclusion, alkanes play a crucial role in various chemical reactions, which are essential in various industrial and everyday applications. Understanding these reactions can help in the development of new materials, energy sources, and other technological advancements.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Алки - это органические соединения, которые играют важную роль в различных химических реакциях, таких как сгорание, добавление, замена, элиминация, полимеризация, гидролиз, окисление и восстановление. Понимание этих реакций поможет в разработке новых материалов, источников энергии и других технологических достижений.

    Use Quizgecko on...
    Browser
    Browser