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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
State two ways to prevent the rusting of iron.
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
In the electrolytic refining of a metal M, what would you take as the anode, the cathode and the electrolyte?
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
Name two metals which will displace hydrogen from dilute acids, and two metals which will not.
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
What are amphoteric oxides? Give two examples of amphoteric oxides.
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
(b) Assess the usefulness of these tests in distinguishing between metals and non-metals.
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
(a) How could you use them to distinguish between samples of metals and non-metals?
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
Food cans are coated with tin and not with zinc because (a) zinc is costlier than tin.
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water.
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
Which of the following methods is suitable for preventing an iron frying pan from rusting? (a) Applying grease
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
Which of the following pairs will give displacement reactions? (a) NaCl solution and copper metal
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
What are alloys? answer
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
Which metals do not corrode easily?
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
Metallic oxides of zinc, magnesium and copper were heated with the following metals.
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
What chemical process is used for obtaining a metal from its oxide?
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
Name two metals which are found in nature in the free state.
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
Define the following terms. (i) Mineral (ii) Ore (iii) Gangue
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
Why do ionic compounds have high melting points?
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
(i) Write the electron-dot structures for sodium, oxygen and magnesium. (ii) Show the formation
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
What would you observe when zinc is added to a solution of iron (II) sulphate?
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asked 1 day ago in Metals and Non-metals by Brainiak verified_user (13.5k points)
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
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