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Define allotropy.
Date posted:
October 19, 2017
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What are hygroscopic salts?
Date posted:
October 19, 2017
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State four uses of salts.
Date posted:
October 19, 2017
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State three uses of alkaline earth metals
Date posted:
October 19, 2017
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State two physical properties of alkaline earth metals
Date posted:
October 19, 2017
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State and explain the trends in atomic sizes down the alkaline earth metals.
Date posted:
October 19, 2017
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State three uses of alkali metals and their compounds.
Date posted:
October 19, 2017
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What is ionization energy?
Date posted:
October 19, 2017
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State three physical properties of alkali metals.
Date posted:
October 19, 2017
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Define valency
Date posted:
October 19, 2017
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Define the following terms.
1. Cations
2. Anions
Date posted:
October 19, 2017
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Atoms are said to be electrically neutral, explain.
Date posted:
October 19, 2017
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State three subatomic particles.
Date posted:
October 19, 2017
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What are radicals?
Date posted:
October 19, 2017
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Define Relative atomic mass
Date posted:
October 19, 2017
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Differentiate between the atomic number and the the mass number
Date posted:
October 19, 2017
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Define an atom
Date posted:
October 19, 2017
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What is thermal cracking?
Date posted:
October 18, 2017
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Using a detailed explanation, give a reason as to why brass is not in the periodic table
Date posted:
October 18, 2017
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Give the uses of water as a reagent in the laboratory.
Date posted:
October 16, 2017
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State two factors that may alter the ionization energy of elements.
Date posted:
October 14, 2017
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Define the term isotope
Date posted:
October 14, 2017
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What is a flame?
Date posted:
October 13, 2017
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What do you understand by the term half-life of a radioisotope
Date posted:
October 12, 2017
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State two observations made when sodium carbonate crystals are dropped into a beaker containing dilute hydrochloric acid.
Date posted:
October 11, 2017
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Give a reason why bakers must use baking powder when making cakes and doughnuts
Date posted:
October 11, 2017
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State the products formed when a dillute acid reacts with a carbonate
Date posted:
October 11, 2017
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Write a well balanced chemical equation to show the reaction between Magnesium and dilute Sulphuric acid
Date posted:
October 11, 2017
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Give two tests for acidic substances
Date posted:
October 11, 2017
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Give the colour observed when a litmus paper is dropped into the solutions of the following
i)Distilled water
ii)sour milk
iii)Lemon juice
Date posted:
October 11, 2017