Foundation1_091008
Test ID: 44
Name: ______Date: _October 9, 2008_
1. (1991541). What is avogadro's number?
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REF: pg 1 ref 99
2. (1991542). Define relative atomic mass? How is this sometimes abbreviated - see it in Salter.
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REF: pg 1 ref 99
3. (1991544). What is relative molecular mass also known as? Work this out for CO2.
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REF: pg 1 ref 99
4. (1991550). The % composition by mass of magnesium hydride is:-
92.3% Mg
7.7% H
Work out the molecular formula for MgH2
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REF: pg 1 ref 99
5. (1991551). Calculate the % by mass of nitrogen in ammonium sulphate, (NH4)2SO4.
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REF: pg 1 ref 99
6. (1991555). What is mass number, atomic number and relative atomic mass?
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REF: Ref 99, p4
7. (1991557). What do we now arrange the periodic table in order of?
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REF: Ref 99, p4
8. (1991569). How does first ionisation enthalpy change as you go down a group?
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REF: Ref 99, p5
9. (1991570). How do successive ionisation enthalpies compare as more electrons are removed from a particular element? What is the order of difficulty of removal of electrons?
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REF: Ref 99, p5
12. (1991583). Label the parts of a mass spectrometer.
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REF: Ref, 99, p7
13. (1991584). Describe what happens inside a mass spectrometer
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REF: Ref, 99, p7
14. (1991585). Sketch a mass spectrum of Chlorine (75% 35Cl and 25% 37Cl)
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REF: Ref. 99, p7
22. (1991614). In terms of energy, which of the following best describes the energy of an electron in the ground state?
(A). It contains the least amount of energy
(B). It contains the most amount of energy
REF: Ref. 99, p10
27. (1991631). quick check q1
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REF: Ref. 99, p11
28. (1991637). Why does an atom of sodium donate its outer electron to an atom of chlorine?
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REF: Ref. 99, p12
29. (1991638). Complete the two equations below:-
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REF: Ref. 99, p12
30. (1991642). What is a dative covalent bond?
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REF: Ref. 99, p13
31. (1991643). Draw both the dot and cross diagrams and structural formulas for carbon monoxide and the ammonium ion.
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REF: Ref. 99, p13
32. (1991644). Electrons in a metallic lattice are said to be (what term is used)? What property of metals results from this phenomenon?
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REF: Ref. 99, p13
33. (1991648). How do groups of electrons arrange themselves in space?
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REF: Ref. 99, p14
34. (1991654). What shapes are the following: BeCl2, ethyne and CO2
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REF: Ref. 99, p14
35. (1991658). Give a general equation to show how the group 2 metals react with water.
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REF: Ref. 99, p15
36. (1991659). Give a general equation to show how the group 2 metal oxides react with water.
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REF: Ref. 99, p15
37. (1991665). Give a general equation to show how the group 2 metal carbonates undergo thermal decomposition.
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REF: Ref. 99, p15
38. (1991666). What happens to the solubility of group 2 metal carbonates as you go down group 2?