HOMEWORK – lesson 6


4. Read the text and put the missing phrases back in the right gaps

A.      good conductors of electricity and malleable

B.      combinations of elements can create the products

C.      semiconductor and computer chip

D.      classify elements by properties


How to read and interpret the periodic table

The periodic table helps chemists 1.…D… and similarities. One way to sort the elements is to divide
them into three categories – metals, nonmetals and metalloids.

Most of the elements on the periodic table are considered metals. They share similar
characteristics – most are solid, shiny, 2…A…... Nonmetals have properties opposite of the metals –
they are brittle, not flexible and not strong conductors of heat or electricity. Some nonmetals are
liquids, some are gases. Metalloids, or semimetals, are considered a cross between metals and
nonmetals. Metalloids have unique conductivity properties, which make them useful in the 3…C….
industries.

The periodic table can help us better understand chemical elements and their relationship to one
another – how they react with each other, and how 4 …B…, materials and technologies that shape our
lives.

       https://www.chemicalsafetyfacts.org/celebrating-150-years-of-the-periodic-table-of-elements/


6. Find the 15 chemical elements.

If you cross all of them, the remaining letters, if read from left to right, form a word. Which
word is it?







                                             A

                                               B

                                                C

                                                 D

                                                  E

                                                   F

                                                    G

                                                     H

                                                      I

                                            1

                                             C

                                               A

                                                R

                                                 B

                                                  O

                                                   N

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                                                      E

                                            2

                                              A

                                               L

                                                U

                                                 M

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                                                    I

                                                     U

                                                      M

                                            3

                                             L

                                               E

                                                B

                                                 S

                                                  L

                                                   E

                                                    M

                                                     M

                                                      E

                                            4

                                             C

                                               K

                                                I

                                                 N

                                                  O

                                                   E

                                                    N

                                                     N

                                                      T

                                            5

                                             I

                                               C

                                                D

                                                 R

                                                  R

                                                   D

                                                    A

                                                     E

                                                      L

                                            6

                                             U

                                               I

                                                I

                                                 C

                                                  O

                                                   Z

                                                    I

                                                     N

                                                      C

                                            7

                                             M

                                               N

                                                U

                                                 R

                                                  A

                                                   N

                                                    I

                                                     U

                                                      M

                                            8

                                             S

                                               R

                                                M

                                                 O

                                                  S

                                                   M

                                                    I

                                                     U

                                                      M

                                            9

                                             Y

                                               T

                                                T

                                                 E

                                                  R

                                                   B

                                                    I

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                                                      M



















/´æl thinsp thinsp yə’mɪn thinsp thinsp i thinsp thinsp əm/ aluminium

/’ɒz thinsp thinsp mi thinsp thinsp əm/     osmium

/’mɜr thinsp thinsp kyə thinsp thinsp ri/    mercury

/’kæl thinsp thinsp si thinsp thinsp əm/    calcium

/ru’bɪd thinsp thinsp i thinsp thinsp əm/ rubidium

/’ni thinsp thinsp ɒn/        neon

/’kɑr thinsp thinsp bən/     carbon

/’soʊ thinsp thinsp di thinsp thinsp əm/   sodium

/ɪ’tɜr thinsp thinsp bi thinsp thinsp əm/    ytterbium

/’aɪ thinsp thinsp ərn/       iron

/tɪn/            tin

/’nɪk thinsp thinsp əl/       nickel

/lɛd/           lead

/yʊ’reɪ thinsp thinsp ni thinsp thinsp əm/   uranium

/zɪŋk/          zinc

                                        http://dictionary.reference.com/help/luna/IPA_pron_key.html


7. Explore The Royal Society of Chemistry’s interactive periodic table: images, history, alchemy,
podcasts, trends. Identify the elements described in 1 - 6  below.
https://www.rsc.org/periodic-table/


 1. This metallic element is present in surprising amount in baked beans.    nickel
 2. This is a shiny grayish metal that rusts in damp air.    iron
 3. This element’s name is derived from the Greek word for ‘sun’.   helium
 4. This element represented the perfection of all matter at any level for the alchemists.   gold
 5. This is the element with the highest density.   osmium
 6. This element has the highest melting point.    carbon


8. Synonyms


1. Silicon is a nonmetallic element that is inexpensive because it is so abundant in minerals and
rocks.

a. rare                                                                                     b.
plentiful


2. When exposed to air and moisture, iron will corrode.

a. rust                                                                                     b.
shine


3. After the fire, the police investigated the cause of the combustion.

a. burning                                                                              b.
excitement


4. Gasoline should be stored carefully because it is flammable.

a. fireproof                                                                           b. able to
catch fire easily


5. Heat can convert a solid to a liquid.

a. condense                                                                         b. change


6. A catalyst speeds up a chemical reaction.

a. chemical agent                                                               b. forest animal


7. The temperature on a Fahrenheit fever thermometer ranges from 94° to 108°.

a. extends                                                         b. contracts


8. The volume of air in a room can be measured in cubic feet.

a. quality                                                           b. quantity


9. Ten minus four equals six.

a. less                                                                b. plus


10. Water contains hydrogen and oxygen in a ratio of two to one.

a. proportion                                                     b. size


11. The price of gasoline was quadrupled, and there were fears it would go even higher.

a. multiplied by four                                         b. divided by four