Year 10 Advanced Chemistry Trial Test 2013Name: ______

Part A: Multiple Choice Questions [ 20 marks ]

  1. Oxygen exists as:
    A. Oxygen atom

B. Oxygen free radical
C. Oxygen molecule
D. Water vapour

  1. Which of the following is a radical?
    A. Cl-
    B. NH3
    C. Li+
    D. CO32-
  2. Which is the correct name for Sr3(PO4)2 ?
    A. Sulphur Phosphate
    B. Strontium Phosphorus Oxide
    C. Strontium Phosphate
    D. Barium Diphosphate
  3. What is the correct formula for the following compound?
    Let M be metal and N be non-metal.
    M has 3 valence electrons and N has 6 valence electrons.
    A. MN2
    B. M3N6
    C. M2N3
    D. M3N2
  4. Characteristics used to describe a substance
  5. period
  6. proton
  7. product
  8. properties
  9. Compounds formed by cations and anions
  10. Ionic compound
  11. Covalent compound
  12. metallic compound
  13. giant molecule
  1. Which of the following is NOT a diatomic gas?
  2. Chlorine
  3. Neon
  4. Nitrogen
  5. Hydrogen
  1. Which is the correct feature down a group of elements at room temperature?
  2. same number of electron shells
  3. same number of valence electrons
  4. atomic size becomes smaller
  5. the reactivity of elements are increasing
  6. Which is CORRECT for isotopes?
    A. different element with same electron number
    B. same element with different proton number
    C. different element with same neutron number
    D. same element with different neutron number
  7. An iron nail was immersed in a solution of copper sulfate and when it was removed from the solution, it was coated with a layer of copper metal. After a different iron nail was immersed in a solution of zinc nitrate and removed, this nail rusted just as rapidly as a new iron nail. Rank these three metals in order of activity from most active to least active.
    A. Zn > Cu > Fe

B. Fe > Cu > Zn

C. Zn > Fe > Cu

D. Cu > Fe > Zn


  1. Which of the following atoms has the largest diameter?
    A. Fluorine
    B. Iodine
    C. Bromine
    D. Chlorine
  2. How many valence electrons does an oxygen atom have?
  3. 2
  4. 6
  5. 8
  6. 16
  7. Which is the correct electronic configuration of the following element/ion?
  8. Na (2,8,2)
  9. Ca2+ (2,8,8)
  10. Ar(2,8,7)
  11. Cl- (2,7)
  1. Which is a gaseous non-metal at room temperature?
  2. Bromine
  3. Boron
  4. Iodine
  5. Argon
  6. Which is TRUE about the compound formed on combining an Alkali Metal with the Halogen element chlorine to form the metal chloride?
  7. the solution in water does not conduct electricity
  8. soluble to form a pale green solution in water
  9. the solid conducts electricity
  10. is an ionic compound
  1. Given the equation ...
    2K(?) + 2H2O(?) ==> 2KOH(X) + H2(?)
    What is x?
  2. (aq)
  3. (s)
  4. (g)
  5. (l)
  6. Which is NOT true for Alkali Metals?
  7. All have only one valence electron
  8. All react with water vigorously
  9. All are hard metals
  10. All have silvery luster
  1. Which is NOT a transition metal?
    A. Calcium
    B. Iron
    C. Nickel
    D. Zinc
  2. Given the lists of elements, which of them are the Noble Gases?
  3. Li, Na, K, ...
  4. He, Ne, Ar, ...
  5. Ti, Cr, Mn, ...
  6. F, Cl, Br, ...
  7. An unknown element has a mass number of 54 and atomic number of 25, how many neutrons this element has?
    A. 54
    B. 25
    C. 29
    D. 27


2. Complete the table [ 12 marks ]

Element/Ion / Symbol / Atomic no / Mass no / Proton no / Neutron no / Electronic
configuration
Magnesium / 12 / 24
Ca / 40 / 20
15 / 16 / (2,8,5)
Neon / 20 / 10
Al3+ / 13 / 27
Iron / 26 / 56 / (26 electrons)
Sulphide ion / 32 / 16

3. Name the following compound:[ 10 marks ]

Formula / Name / Ionic or covalent / How many atoms in one molecule?
a) / NaBr
b) / Ag2O
c) / H2O
d) / (NH4)2SO4
e) / PCl3

4. Write the chemical formulae: [ 8 marks ]

Name / Formula / Name / Formula
a) / Sodium nitrate / b) / Sodium oxide
c) / Ammonium chloride / d) / Magnesium fluoride
e) / Zinc sulphate / f) / Iron (III) oxide
g) / Iron (II)sulphide / h) / Aluminium carbonate

5. Balance the following chemical equations.

a) CH4+ O2 ------>CO2 + H2O

b) Fe + O2 ------>Fe2O3

c) Mg + HCl ------>MgCl2+ H2

d) AgNO3 + NaCl ------> AgCl+ NaNO3

e) KNO3+ H2CO3 ------>K2CO3+ HNO3

6. Draw the following structure using Lewis diagram and state whether each is an ionic bond or covalent bond! [ 3 marks each ] + [ 1/2 mark for the bond type ] = [28 marks]

a) Lithium Bromide / b) HydrogenSulphide
c) Ammonia / d) Oxygen molecule
e) Carbon Dioxide / f) Aluminium Oxide
g) Methane CH4 / h) Barium Iodide

7. The following shows a base and an acid. [ 8 marks ]
HNO3 and NaOH
a) Which is the base? Why? Name the base. [2]
b) Which is the acid? Why? Name the acid. [2]
c) What type of reaction when an acid is reacted with a base? [1]
d) What is the end products of such a reaction? Write the balanced chemical equation. [3]

8. Distinguish the types of reaction: Decomposition, Combination, Precipitation, Displacement, Combustion [ 5 marks ]

Reaction / Type
a) / Mg(s) + O2(g)  MgO(s)
b) / KI (aq) + Pb(NO3)2(aq)  PbI2(s) + KNO3(aq)
c) / CH4(g) + O2(g)  CO2(g) + H2O (l)
d) / H2O2(aq)  H2O (l) + O2 (g)
e) / Al(s)+ ZnSO4(aq)  Al2(SO4)3(aq) + Zn(s)

9. Rust is the corrosion of iron. It’s chemical name is Iron (III) Oxide. [ 7 marks ]
a) Write a Balanced Chemical Equation in the formation of Rust. [2]
Iron + Oxygen ------> Iron (III) Oxide
b) What are the other factors that cause or speed up Rusting? [3]
c) Give 2 ways to prevent Rusting. [2]

10.Compare and Contrast Ionic and Covalent Compounds. [ 4 marks ]


11. The following shows ionic lattice and metallic lattice [ 8 marks ]

a) Explain why Sodium Chloride (in solid state) has a high melting point. [2]
b) Explain why Sodium Chloride (in solid state) is not able to conduct electricity yet it can conduct electricity when it is molten or dissolved in water. [3]
c) Explain how metal atoms are arranged. How can metal conduct electricity based on its metallic bonding model. [3]

12. The following shows the Reactivity Series of metals. [ 10 marks ]
KNaCaMgAlZnFe Pb Cu Ag Au
a) Label the most active and least active metal. [1]

b) From this equation: Fe2O3 + 2Al  Al2O3 + 2Fe [1]
Which metal (Iron or Aluminium) is more reactive?
c) What are native metals? Why are they normally used to make jewellery? [2]
d) Galvanisation is a process to prevent corrosion in metals by coating metal (eg. Iron) with zinc. Why Zinc is used instead of Copper? [2]
e) Why do Sodium and Potassium need to be stored in oil? [2]
f) Both silver and copper are the very best conductor of electricity. Give 2 reasons why silver is not commonly used as electrical wires. [2]