Year 9 - Chemistry - 10.3.14

Thai Sikh International School

E-Learning Programme – Online Assignment –  07/03/2014

Name :                                                                                                         Subject : Chemistry

Year   :  9                                                                                                         Week  No. :  9                                   

CHEMISTRY THE PERIODIC TABLE

QUESTIONSHEET

The boxes represent particles of different gases. One box shows the particles of elements in group 0 (group 8).

(a) (i) What name is given to group 0 (8) elements?

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(ii) Name two elements from group 0.

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(b) (i) Which box best represents particles from group 0 elements?

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(ii) Explain the reason for your answer.

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(c) A lighted splint is put into a gas jar of helium. What would happen?

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(d) Some properties of elements change as you go down their group in the periodic table. For each property

listed below, comment on if and how it changes as you go down group 0.

(i) reactivity

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(ii) density

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(iii) metal or non-metal

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(e) Which would be the best method to distinguish between different samples of group 0 gases?

Choose from the list below:

(i)                 shake the sample with water and add an indicator,

(ii) do a flame test,

(iii) put a lighted splint into a sample of each gas,

(iv) measure the density of each.

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