Uddingston Grammar School

Nat3/4 Chemistry

Sub-Topic 1b.2 : Test 3

National 3

  1. One of the products of the reaction between sulphuric acid and copper oxide is copper sulphate. The other product is water.

The word equation for the reaction is

Acopper sulphate + copper oxide sulphuric acid + water

Bcopper sulphate + watersulphuric acid + copper oxide

Csulphuric acid + copper sulphatecopper oxide + water

Dsulphuric acid + copper oxidecopper sulphate + water

  1. The following paragraph is a students description of a chemical reaction taking place.

The magnesium ribbon was held, using tongs, in the blue flame of the Bunsen burner. The magnesium began to glow with a white flame as it reacted with the oxygen of the air.

At the end of the reactiona a grey ash was produced which was magnesium oxide.

(a)Write the word equation for this reaction.1

(b)Aluminium was also reacted with oxygen in a second experiment.

What name would be given to the product of this second reaction?

1

  1. What elements are present in the following compounds?

(a)Sodium chloride

(b)Lead bromide2

  1. A bar of chocolate contains minerals, proteins and fat as well as carbohydrates.

(a)The table shows the elements present in the minerals in bar of chocolate. The percentages of each element in the minerals are also shown.

(i)Use the information in the table to complete a bar graph of this information. ( graph paper will be provided for you)

3 –ps

(ii)Name the non-metal found in the minerals in the bar of chocolate. 1

National 4

  1. The names of some elements are shown

Identify the two elements which react together to form a covalent compound. You may wish to use page 8 of the data booklet to help you. 1PS - Processing

  1. The grid shows the names of some substances

A

Fluorine

/

B

Copper
/

C

Sodium
D
Air / E
Carbon dioxide
/ F
Silicon

a)Identify the mixture 1PS - Processing

b)Identify the two covalent elements 1PS – Processing

  1. The grid shows the names of some compounds.

A / B
Lead sulphate / Sodium chloride
C / D
Calcium carbonate / Potassium phosphate

Identify the compound which contains only two elements 1KU

  1. Many substances can be represented by simple diagrams.

a)Identify the diagram which could represent an element.

1KU

b)Identify the diagram which contains diatomic molecules

1PS - Processing

c)Identify the two diagrams which do not contain molecules

1PS - Processing

  1. Calcium iodate is a compound which is added to animal feeds. Name the elements present in calcium iodate. 1KU
  1. Write the formula for nitrogen dioxide 1KU
  1. When manganese dioxide is added to hydrogen peroxide solution, oxygen gas is produced.

Oxygen gas exists as diatomic molecules. What does diatomic mean? 1KU

  1. The grid shows the formulae of some oxides.

Identify the two oxides which are covalent. 1PS – Processing

END OF TEST20 MARKS

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