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					                                                          Homework 1

1.   Which box in the grid shows:

a) a definition of precipitation?

b) an example of an everyday chemical
   reaction?

c) a way of recognising a chemical
   reaction? (4 possible answers)

                                                                 [3]
2.
a) Give 2 examples of everyday
   reactions.

b) Complete this sentence:

     Everything in the world is made up
     of ______

c) Which box (or boxes) in the grid
   shows something which always
   happens when a chemical reaction takes place?                 [4]



3. Give the names of 3 elements named after scientists.           [1]



4. Which box (or boxes) in
   the grid shows a
   statement which is true
   about the elements of
   the periodic table?




                                                                 [2]
                                                           Homework 2

1.   Which box (or boxes) in the grid
     shows the elements contained in:

a) sodium chloride

b) calcium nitrate

c) calcium hydroxide

d) sodium sulphite

e) sodium cyanide                                                 [7]




2. Complete this table:

Compound name                           Elements present
Sodium Bromide
Lithium Phosphide
Iron Carbide
Potassium Fluoride
Lithium Sulphate
Sodium Sulphite
Potassium Carbonate
Iron Phosphate
Magnesium Nitrate
Sodium Hydroxide
Potassium Cyanide
Cobalt Chlorate
Zinc Sulphite


                                                                  [13]
                                                        Homework 3
1.   Complete this table:

Compound name                        Elements present


Copper oxide
Copper sulphite
Copper sulphate
Copper hydroxide
Copper cyanide
Lithium hydride
Lithium hydroxide
Calcium carbonate
Potassium carbide
Tungsten carbide
Zinc hydroxide
Sulphur chloride
Magnesium nitrate
Carbon dioxide

                                                               [14]

Use your data book for this Q

2. James dissolves 1g sodium chloride in
   100 cm3 water.
   Which box (or boxes) in the grid
   shows a word which refers to:

a) the salt

b) the water

c) the salty water
                                                                [6]
                                                               Homework 4
1. - use your data book for this Q

Substance                   M.Pt. oC               B.Pt. oC

A                           645                    1300

B                           -7                     59

C                           -165                   -92

D                           27                     98


    The table shows melting points and boiling points of substances
    labelled A, B, C, and D.

    a. Which substance is liquid at room temperature?
    b. Which substance is a gas at room temperature?
    c. Which substance cannot be a metal?                                [3]

2. - use your data book for this Q

Some properties of 6 elements are given in the table below:

Element              Density/gcm-3     B.Pt. oC           Conductivity
A                    3.12              59                 poor
B                    8.64              765                good
C                    19.4              5660               good
D                    0.00037           -152               poor
E                    0.53              1347               good
F                    2.07              445                poor



    a.   Which of these six elements are metals?
    b.   Which element is a gas at room temperature (20oC)?
    c.   Which element will float on water?
    d.   Which non-metal is a solid at 60oC?
    e.   Which metal is a liquid at 4000oC?
    f.   What is the boiling point of the least dense metal?
    g.   Use your data booklet to identify these elements.               [7]
                                                          Homework 5
This homework is based on your data booklet.

1.   State the page which shows
     a) the melting and boiling point of elements
     b) the melting and boiling point of compounds
     c) the densities of elements
     d) the date of discovery of elements                            [4]

2. The elements of the periodic table are arranged in groups. State the
   group to which each of the following elements belong
   a) chlorine
   b) aluminium
   c) carbon                                                         [3]

3. State the melting point of
   a) lead
   b) magnesium
   c) bromine                                                        [3]

4. State the boiling point of
   a) sulphur dioxide
   b) pentane
   c) barium chloride                                                [3]

5. State the density of
   a) gold
   b) oxygen
   c) aluminium                                                      [3]

6. State the flame colour for
   a) sodium
   b) potassium
   c) calcium
   d) lithium                                                        [4]
                                                             Homework 6
1.   State the boiling point of
     a) lithium
     b) chlorine
     c) neon                                                            [3]

2. Name the element with the atomic number
   a) 10
   b) 53
   c) 96                                                                [3]

3. State the melting point of
   a) sodium chloride
   b) cyclohexane
   c) ammonia                                                           [3]

4. State the date of discovery of
   a) aluminium
   b) argon
   c) uranium                                                           [3]

5. Name three elements which are not found in nature either as the
   element or in a compound, but have to be made by scientists.    [3]

6. State the solubility (very soluble, soluble or insoluble) in water of
   a) calcium carbonate
   b) magnesium chloride
   c) silver sulphate                                                    [3]

7. State the solubility in water of
   a) silver nitrate
   b) silver chloride                                                   [2]
                                                            Homework 7

1.   Use your data booklet to decide whether each of the following is a
     solid, a liquid or a gas at room temperature (20oC)

     a) sulphur

     b) helium

     c) mercury

     d) bromine

     e) iodine

     f) butane

     g) pentane

     h) sulphur dioxide

     i) nitrogen dioxide

     j) calcium oxide                                                 [10]


2. a) State the boiling point of
            i)    ethanol
            ii)   water

     b) Describe how the two liquids can be separated.                    [4]

3. a) State the solubility in water of
   i) lead iodide
   ii) potassium nitrate

     b) Describe how the two substances can be separated.                 [4]

4. Name a soluble compound of Barium

5. Name an insoluble compound of Calcium                                  [2]
These questions are all at the end of chapter 1 of your Standard Grade
   text book:

                                                          Homework 8
General KU

Question 1               3 marks
Question 5               1 mark
Question 9               5 marks                  Total = 20 marks
Question 10              7 marks
Question 12              4 marks

                                                          Homework 9
General PS

Question 3               1 mark
Question 4               2 marks
Question 6               2 marks                  Total = 10 marks
Question 7a,b            2 marks
Question 11              3 marks

                                                        Homework 10
Credit KU

Question 2               3 marks

Credit PS                                         Total = 10 marks

Question 7c              2 marks
Question 8               5 marks

				
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