Metals Questions and Answers

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1 answer

Sodium metal reacts with air to form two oxides. Give the formulae of the oxides.

asked Aug 17, 2021 in Chemistry Form 3 by anonymous

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1 answer

answer to electrical current passing through H2SO4 State and explain the change in mass that occur when following substances are separately heated in open crucibles [4 mks]

asked Aug 4, 2021 in Chemistry Form 3 by anony mous

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2 answers

Give two properties of aluminum that makes it very suitable for making cooking utensils

asked Aug 4, 2021 in Chemistry Form 4 by anony mous

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1 answer

Metal R does not react with an oxide of metal S. Metal T reacts with an oxide of metal S. metal Q reacts with an oxide of T. Arrange the metals in increasing order of reactivity.

asked Jul 27, 2021 in Chemistry Form 4 by anonymous

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1 answer

Give the name of each of the following properties as described.

asked Jul 26, 2021 in Chemistry Form 4 by anony mous

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1 answer

The above is a simplified diagram of the Downs Cell used for the manufacture of sodium. Study it and answer the questions that follow.

asked Jul 9, 2021 in Chemistry Form 4 by anony mous

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1 answer

The chief ore of aluminium is bauxite which mainly contains Al2O3.2H20. The ore is initially purified before aluminium is extracted electrolitically.

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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1 answer

When a current of 0.5 amperes was passed for 32 minutes and 10 seconds through fused chloride of metal P 0.44 of P was deposited. Determine the charge of the ion of metal P. (IF = 96,500C, P =88)

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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1 answer

Describe how you would prepare dry sample of lead (II) chloride starting with lead (II) carbonate.

asked Jul 7, 2021 in Chemistry Form 4 by anony mous

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1 answer

An ore is suspected to contain mainly sodium. Describe a method that can be used to confirm the presence of sodium in the ore.

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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1 answer

The standard electrode potentials of a metal H and Iron are given below.

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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1 answer

The table shows the elements in period 3 of the periodic table. Study it and answer the questions that follow.

asked Jun 22, 2021 in Chemistry Form 4 by anonymous

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1 answer

In a certain factory, iron is extracted from the haematite ore using the blast furnace as shown in Figure 1. The other raw materials are coke, limestone and air. The melting and boiling points of iron are 1535°C and 3000 °C, respectively.

asked Jun 21, 2021 in Chemistry Form 3 by anonymous

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1 answer

One of the ores of iron is haematite, Fe2O3. Give the name and formula of two other ores of iron.

asked Jun 21, 2021 in Chemistry Form 4 by anonymous

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1 answer

Excess dilute hydrochloric acid was added to an alloy of copper and zinc in a beaker.

asked Jun 21, 2021 in Chemistry Form 4 by anony mous

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