Semester (Science, English, Maths) Year 9-10 2019

60 Questions | Total Attempts: 161

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Semester (Science, English, Maths) Year 9-10 2019 - Quiz


Questions and Answers
  • 1. 
    We all know that everything around us consists of atoms of particular elements. As elements were discovered and named, it became necessary to develop a system to organize all the elements. The system we know today as the periodic table of elements was discovered by a Russian chemist Dimitri Mendeleev in 1869. Read the article about Dmitri Ivanovich Mendeleev and choose the best ending for each statement.
  • 2. 
    Science is everywhere. It gives us the answers to all the questions and helps to understand the world around us. Scientific discoveries have made our life better. Let's have a look at some of them
  • 3. 
    In this part you will solve the Math problems based on the biography of Stephen Hawking, a world-renowned British theoretical physicist, known for his contributions to the fields of cosmology, general relativity and quantum gravity, especially in the context of black holes.
  • 4. 
    In this part you will show your Reading and Listening skills and knowledge of English vocabulary.
  • 5. 
    Listen to the following talk about the development of the antibiotic medicine called penicillin, and answer the questions below.
  • 6. 
    Dmitri Ivanovich Mendeleev, the youngest of fourteen children, was born in Tobolsk, Siberia, on 7th February, 1834. His father died when Dmitri was quite young and his mother ran a glass-making factory to support her large family. By the age of fourteen, it was clear that Mendeleev had an aptitude for science. His mother tried to make sure that he received a decent education. However, her plans were halted when the glass factory was destroyed by fire. Eventually, Mendeleev was admitted to university in St Petersburg. He was happy there, until yet another setback threatened to prevent him from reaching his potential. He fell seriously ill and was forced to stay at home in bed for days, sometimes weeks. He was only able to complete his degree through the help of his teachers and fellow students who would visit him often with books to read and papers to write. In 1856, Mendeleev was awarded his degree, and he soon completed his doctorate and was awarded the post of Professor of Chemistry at the University of St Petersburg. It was not until the last few years of the 1860s that he was to begin work on what we now know to be his great achievement - the arranging of the elements into the Periodic Table. At that time they were distinguished by their atomic weight. This characteristic had been proposed by the British chemist, Dalton, more than 50 years earlier. Mendeleev took Dalton’s work and improved it. He grouped the elements by their atomic weight and by the similarities they possessed in their properties. There were gaps in the table and Mendeleev believed that in the future new elements would be discovered to fill those gaps. His predictions were correct. Three of those elements were found during his lifetime: gallium, scandium, and germanium. They provided the strongest support for his periodic table. The table has now become fundamental to our understanding of chemistry and of how the universe is put together. In Russia, the Tsar considered Mendeleev’s politics too liberal, and consequently Mendeleev resigned from the university in 1900. He remained a popular figure with the Russian people and was appointed Director of the Bureau of Weights and Measures in 1903. He continued in this post until his death from pneumonia on 20th January, 1907.
  • 7. 
    Read the text about Eureka moments and write the correct form of the words given in brackets.
  • 8. 
    That is the end of the test. Now you can send your answers. Thank you!
  • 9. 
    Year 2019 is announced as the year of the Periodic Table. It was created by Dmitri Mendeleev 150 years ago. This discovery is a very important step in the development of Chemistry. Chemistry and the Periodic Table of Elements. Questions 11-30.
  • 10. 
    There have been a lot of famous scientists throughout the history of mankind who have made discoveries and breakthroughs that have changed the world. Here are just a few of them. Match the discoveries and the names.
  • 11. 
    Read the text about James Clerk Maxwell, a great scientist who studied electromagnetic field. Which order of the paragraphs is correct?
  • 12. 
    Write your text here
  • 13. 
    To prove his theory of the Big Bang Stephen Hawking solved 15 complicated equations, one at a time. The first equation took him 1 day to solve, the second took him 2 days to solve, the third took him 3 days to solve, and so on, with each equation taking him 1 more day to solve than the previous one. Stephen solved the first equation on a Monday, and the second on a Wednesday. On what day of the week did he finish his 15th equation?
    • A. 

      Sunday

    • B. 

      Monday

    • C. 

      Wednesday

    • D. 

      Friday

    • E. 

      Saturday

  • 14. 
    Given that approximately 76% of all the Chlorine atoms on Earth are Chlorine-35. and 24% of them are Chlorine-37, what is the atomic mass of Chlorine?
    • A. 

      It is 35.2 (approx.)

    • B. 

      It is 35: We ignore 37Cl because it’s an isotope.

    • C. 

      It is 36: We take the average of the two masses: (35+37)/2 = 36

    • D. 

      It is approximately 35.5: It’s calculated as follows: 0.76x35+0.24x37 = 35.5 (approx.)

  • 15. 
    His mother’s plans for his education ...
    • A. 

      Were that he should have the best.

    • B. 

      Were halted by his father's death.

    • C. 

      Were ruined by the fire.

    • D. 

      Started because of his great scientific promise.

  • 16. 
    To complete his degree, Mendeleev ...
    • A. 

      Was helped by his mother.

    • B. 

      Attended St Petersburg University.

    • C. 

      Made good progress.

    • D. 

      Was helped by teachers and students.

  • 17. 
    Mendeleev arranged elements by their weight...
    • A. 

      As Dalton had proposed.

    • B. 

      And grouped them by mass.

    • C. 

      And grouped them by their properties.

    • D. 

      And organized them by colour.

  • 18. 
    He predicted new elements would be found ...
    • A. 

      Because there were gaps in his table. 

    • B. 

      Within the next three years.

    • C. 

      By deducing their properties.

    • D. 

      To provide support for his ideas.

  • 19. 
    Mendeleev resigned from the university because ...
    • A. 

      He was getting too old.

    • B. 

      He became Director of the Bureau of Weights and Measures.

    • C. 

      He had caught pneumonia.

    • D. 

      Of his politics.

  • 20. 
    Isotopes are atoms of an element ... .
    • A. 

      With the same number of protons but different number of neutrons.

    • B. 

      That are radioactive.

    • C. 

      With a magnetic charge.

    • D. 

      With the same number of electrons but different numbers of protons.

  • 21. 
    A(n)  ___________ is a simple, pure substance that cannot be broken down further into a more simpler kind of substance.
    • A. 

      Alloy

    • B. 

      Compound

    • C. 

      Element

    • D. 

      Crystal

  • 22. 
    Is Nitrogen a good conductor of electricity?
    • A. 

      Yes, it is.

    • B. 

      It’s an insulator in normal temperature, but becomes a conductor if liquified

    • C. 

      Not at all! Nitrogen is an insulator

    • D. 

      Yes, in most situations.

  • 23. 
    A chlorine atom attains an octet by
    • A. 

      Gaining one electron

    • B. 

      Gaining eight electrons

    • C. 

      Losing one electron

    • D. 

      Losing five electrons

  • 24. 
    An atom has 9 protons and 10 neutrons. Its mass number is ...
    • A. 

      1

    • B. 

      19

    • C. 

      9

    • D. 

      10

  • 25. 
    An element in Period 3, Group 7 has ...
    • A. 

      7 electrons as total, 3 of them in its valence layer

    • B. 

      3 electrons in its valence layer and 7 energy levels

    • C. 

      3 electrons in its valence layer and 4 energy levels

    • D. 

      7 electrons in its valence layer and 3 energy levels

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