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

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

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.

In this part you will show your Reading and Listening skills and knowledge of English vocabulary.

Listen to the following talk about the development of the antibiotic medicine called penicillin, and answer the questions below.

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.

Read the text about Eureka moments and write the correct form of the words given in brackets.

That is the end of the test. Now you can send your answers. Thank you!

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.

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.

Read the text about James Clerk Maxwell, a great scientist who studied electromagnetic field. Which order of the paragraphs is correct?

Write your text here

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?

• Sunday

• Monday

• Wednesday

• Friday

• Saturday

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?

• It is 35.2 (approx.)

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

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

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

His mother’s plans for his education ...

• Were that he should have the best.

• Were halted by his father's death.

• Were ruined by the fire.

• Started because of his great scientific promise.

To complete his degree, Mendeleev ...

• Was helped by his mother.

• Attended St Petersburg University.

• Made good progress.

• Was helped by teachers and students.

Mendeleev arranged elements by their weight...

• As Dalton had proposed.

• And grouped them by mass.

• And grouped them by their properties.

• And organized them by colour.

He predicted new elements would be found ...

• Because there were gaps in his table. 

• Within the next three years.

• By deducing their properties.

• To provide support for his ideas.

Mendeleev resigned from the university because ...

• He was getting too old.

• He became Director of the Bureau of Weights and Measures.

• He had caught pneumonia.

• Of his politics.

Isotopes are atoms of an element ... .

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

• That are radioactive.

• With a magnetic charge.

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

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

• Alloy

• Compound

• Element

• Crystal

Is Nitrogen a good conductor of electricity?

• Yes, it is.

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

• Not at all! Nitrogen is an insulator

• Yes, in most situations.

A chlorine atom attains an octet by

• Gaining one electron

• Gaining eight electrons

• Losing one electron

• Losing five electrons

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

• 1

• 19

• 9

• 10

An element in Period 3, Group 7 has ...

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

• 3 electrons in its valence layer and 7 energy levels

• 3 electrons in its valence layer and 4 energy levels

• 7 electrons in its valence layer and 3 energy levels

Which elements are the least reactive?

• Helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn)

• Florine (F), Chlorine(Cl), Bromine(Br) and Iodine(I).

• The alkali metals: lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs).

• Transition metals, such as: chromium(Cr), manganese(Mn), iron(Fe), cobalt(Co), nickel(Ni) and copper(Cu).

Which metal is the best conductor of electricity? 

• Iron

• Copper

• Silver

• Gold

Atoms with the same elements with different numbers of neutrons are called .... .

• Isomers.

• Metalloids.

• Isotopes.

• Polymers.

Which elements are liquids in normal temperature?

• Florine, Chlorine, Bromine and Iodine.

• Only Chlorine, Bromine.

• Only Bromine and Mercury.

• No elements are liquids in normal temperature.

Hydrogen atom has just one electron located at the first energy layer (orbit) whose capacity is 2 electrons. Therefore hydrogen is considered as:

• A non-metal

• A halogen (like Florine, Chlorine, Bromine and Iodine), because it’s like the halogens, lacks for just one electron to complete its valence shell (outer shell).

• An alkali metal (like lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs)), because it’s like them, possess just one electron at its valence shell.

• Both as a halogen and an alkali metal; it has a dual nature.

Choose one fact about Chlorine that is not correct.

• It  was recognized as a gas by the Flemish chemist and physician Jan Baptist van Helmont around 1630.

• It is obtained mainly by the electrolysis of salts.

• It is obtained mainly by the electrolysis of salts.

• Compounds of this element are used to disinfect water in swimming pools.

Choose one fact about Carbon monoxide that is not correct.

• It is part of the volcanic gases.

• It is dangerous and can cause massive suicide of whales.

• It is used in food industry for meat colouring.

• It is used to increase agricultural productivity.

Choose one fact about Silicon that is not correct.

• The crystal structure of this substance is the same as that of diamond.

• It is used as a conductor/semiconductor.

• This is the most common chemical element on Earth after oxygen.

• It is part of the river sand.

Is it true or false? Substances consisting of two elements, one of which is oxygen are called Oxides.

• True

• False

Is it true or false? Distilled water does not contain impurities.

• True

• False

What is the molar volume of any gas? 

• 2 l ∕ mol

• 2.4 l ∕ mol

• 22.4 l ∕ mol

• 4.2 l ∕ mol

 Unit of measurement of the amount of a substance is called a ... .

• Gram

• Kilogram

• Mole

• Litre

What are the soluble bases called?

• Salt

• Solution

• Alkali

• Acid

Time is circular - no beginning, no end. Stephen Hawking was born on January 8, 1942, on the 300th anniversary of Galileo's death, and died at 76 on March 14, 2018 on the 139th anniversary of Einstein's birth. Imagine we take the number of years between the death of Galileo and the birth of Einstein and add the number of years between the birth of Einstein  and the birth of Hawking. What is the result? You need to round all the results to the nearest year. ________

Before his illness, Steven Hawking was a cox in Oxford Rowing Team. Suppose the team rowed a boat downstream for 42 miles. The return trip upstream took 8 hours longer. If the current flew at 2 mph, how fast did they row in still water? ________ mph

Palindromes have always fascinated Hawking. Once he was going in a car when his driver glanced at the mileage indicator and happened to notice that it displayed a palindromic number: 13931. Two hours later to his surprise it again displayed another palindrome. What average speed was Steven's car travelling, assuming its average speed was less than 70 mph? ________ mph

Stephen Hawking found it possible to encounter the aliens. Suppose a number of aliens, who have just dropped in from another planet, emerge from their spacecraft.

• there is more than one alien
• each alien has the same number of fingers
• each alien has at least one finger on each hand
• the total number of fingers of all the aliens is between 200 and 300
• the number of fingers each alien has is equal to the number of aliens

How many aliens are there? ________

Suppose a ufologist recently reported a strange object, which he described as being in the shape of a quasi-pyramid, hovering over a cornfield. If you add the number of edges this figure has to its number of faces, what total do you arrive at?

• 28

• 46

• 36

• 38

Stephen Hawking died on the day of π, which is observed on March 14 since 3, 1, and 4 are the first three significant digits of π. Solve this Pi-problem. Pictured below are three identical boxes packed with pies. Which box contains the most pie? You can assume that all pies are exactly the same height.

• A has the most pie

• B has the most pie

• C has the most pie

• A, B and C have equal amounts

In 2008 Steven Hawking's Questioning the universe  video was uploaded to a website where viewers can vote if they like or dislike the video. The video begins with a score of 0, and the score increases by 1 for each like vote and decreases by 1 for each dislike vote. After several minutes the video had a score of 90, and that 65% of the votes cast on his video were like votes. How many votes had been cast on Hawkins' video at that point?

• 200

• 300

• 400

• 500

Hawking wasn't the best student at school. Despite his average grades, both his teachers and his peers seemed to understand that they had a future genius among them, evidenced by the fact that his nickname was "Einstein". Once his Physics' teacher was grading tests of the 15 students in his class and found that when he graded everyone's test except Hawking's, the average grade for the class was 80%. After he graded Hawking's test, the test average became 81%. What was Hawking's score on the test?

• 85

• 91

• 94

• 95

Hawking studied galaxies. Every ‘dot’ that you can see in the image of the Hubble Deep Field is a galaxy. The area of the Hubble Deep Field image covers 1/32000000 of the sky, or the entire universe. There are 3000 dots, or galaxies, in the Hubble Deep Field. Use this figure to estimate the number of galaxies in the universe. ________

Which fact about Alexander Fleming’s life before he became a bacteriologist is true?

• Alexander Fleming was born in Scotland in 1891.

• Alexander did not follow his family occupation.

• He studied medicine at a hospital in Edinburgh.

• He was an average student at school and didn't have any special abilities.

What happened when Fleming used a diluted solution of penicillin?

• Bacteria of influenza did not grow.

• Penicillin worked against many types of bacteria but for those of flu.

• He had the flu and couldn't continue his experiments.

• He had an accident in his laboratory.