CIDESCO Questions with accurate detailed solutions

CIDESCO Questions with accurate detailed solutions ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




Characteristics of life include:,Growth and metabolism ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




Example of organic biological substances are:,Carbohydrates and fats
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Examples of mineral substances are:,Paraffin's and petroleum ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




Matter is everything that:,Occupies space and has weight
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What property does all matter have?,All matter has weight
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Sublimation is the change of matter from:,A solid to a gas ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




The alternation of the properties of matter without formation of any new substances is
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called?,Physical change ||\\//||




The immediate change of a solid into vapour is called?,Sublimation
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An example of a single called cellular organism is?,A bacterium
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Examples of bacteria are?,Bacilli and cocci ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




Which of the following belongs to the science of chemistry?,The alternation of the structure
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of molecules
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, An electrolyte is?,A substance which, dissolved in water and splits into ION's
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Example of electrolytes are?,Acids and salts ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




An example of an electrolyte is?,Salt solution
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An acid is an electrolyte because?,It can conduct an electrical current
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An example of an inorganic acid is?,Sulphuric acid
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An alkali must contain?,Metal atoms and hydroxyl groups
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If metal oxide is dissolved in water it forms?,An alkali
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PH can be decreased by?,Increasing hydrogen ions
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pH is?,The number of free H ions in a solution
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The pH of the skins acid mantle is?,5.5
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A characteristic of a weak acid is that it?,Supports the natural pH of the skin
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A characteristic of organic acids is that?,They contain the element carbon
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Organic acids are found in?,Sebum and plants
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