Recent questions in Chemistry Form 1

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The Diagram below is set-up for the laboratory preparation of oxygen gas.

asked Jul 27, 2021 in Chemistry Form 1 by anony mous

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The diagrams below represent two iron nails with some parts covered tightly with zinc and tin respectively. What observations would be made at the exposed points R and Z if the wrapped nails are left in the open for several days? Explain.

asked Jul 27, 2021 in Chemistry Form 1 by anony mous

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Fractional distillation of liquid air is usually used to separate various gaseous mixtures in air. Explain how to

asked Jul 27, 2021 in Chemistry Form 1 by anony mous

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Describe how burning can distinguish CH2CH2 from CH3CH3

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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Air was passed through several reagents as shown below

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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The diagram below shows the relationship between the physical states of matter.

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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The curves below represent the variation of temperature with time when pure and impure samples of a solid were heated separately.

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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The structure of two molecules of water can be represented as shown below.

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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Give two applications of chromatography?

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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What is paper chromatography?

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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Name the process which take place when Fe2+ changes to Fe3+

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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Name the process which take place when Iodine changes directly from solid to gas

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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State one way in which the strength of a base or an acid can be determined in the laboratory.

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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The diagram below illustrates an experiment set up to investigate the effect of heat on copper (II) carbonate. Study it and answer the questions that follow.

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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1 answer

State the importance of oxygen in cutting metals

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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Complete the table below to show pairs of substances used to prepare oxygen.

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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2 answers

Give two products formed when a candle burns.

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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1 answer

A seed catalogue that the preferred soil pH range for the growth of different varieties of a crop are as shown in the table.

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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Equal volumes of water put in 100cm3 glass beaker and heated for 5 minutes using Bunsen flames. It was observed that water in beaker A registered higher temperature than beaker B.

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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State one application of fractional distillation.

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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