Art and Business Studies
PRACTICE EXAMINATION QUESTIONS FOR 1.1 ATOMIC STRUCTURE
(includes some questions from 1.4 Periodicity) 1. (a) Complete the following table.
|Relative mass|Relative charge|
Neutron|||
Electron|||
(2)
(b) An atom has twice as many protons as, and four more neutrons than, an atom of 9Be. Deduce the symbol, including the mass number, of this atom.
.....................................................................................................................................
(2) (Total 4 marks)
2. (a) Define the terms
(i) mass number of an atom,
........................................................................................…...............................
(ii) relative molecular mass.
........................................................................................…...............................
........................................................................................…...............................
(3)
(b) (i) Complete the electron arrangement for a copper atom.
1s2 …………………………….........................................................................
(ii) Identify the block in the Periodic Table to which copper belongs.
........................................................................................…...............................
(iii) Deduce the number of neutrons in one atom of 65Cu
........................................................................................…...............................
(3)
(c) A sample of copper contains the two isotopes 63Cu and 65Cu only. It has a relative atomic mass, Ar, less than 64. The mass spectrum of this sample shows major peaks with m/z values of 63 and 65, respectively.
(i) Explain why the Ar of this sample is less than 64.
........................................................................................…...............................
(ii) Explain how Cu atoms are converted into Cu+ ions in a mass spectrometer.
(includes some questions from 1.4 Periodicity) 1. (a) Complete the following table.
|Relative mass|Relative charge|
Neutron|||
Electron|||
(2)
(b) An atom has twice as many protons as, and four more neutrons than, an atom of 9Be. Deduce the symbol, including the mass number, of this atom.
.....................................................................................................................................
(2) (Total 4 marks)
2. (a) Define the terms
(i) mass number of an atom,
........................................................................................…...............................
(ii) relative molecular mass.
........................................................................................…...............................
........................................................................................…...............................
(3)
(b) (i) Complete the electron arrangement for a copper atom.
1s2 …………………………….........................................................................
(ii) Identify the block in the Periodic Table to which copper belongs.
........................................................................................…...............................
(iii) Deduce the number of neutrons in one atom of 65Cu
........................................................................................…...............................
(3)
(c) A sample of copper contains the two isotopes 63Cu and 65Cu only. It has a relative atomic mass, Ar, less than 64. The mass spectrum of this sample shows major peaks with m/z values of 63 and 65, respectively.
(i) Explain why the Ar of this sample is less than 64.
........................................................................................…...............................
(ii) Explain how Cu atoms are converted into Cu+ ions in a mass spectrometer.