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CIDESCO EXAM PREP EXAM|| ACTUAL EXAM ALL QUESTIONS AND 100% CORRECT ANSWERS ALREADY GRADED A+|| LATEST UPDATE 2024 WITH VERIFIED SOLUTIONS|| ASSURED PASS!!! $29.49   Add to cart

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CIDESCO EXAM PREP EXAM|| ACTUAL EXAM ALL QUESTIONS AND 100% CORRECT ANSWERS ALREADY GRADED A+|| LATEST UPDATE 2024 WITH VERIFIED SOLUTIONS|| ASSURED PASS!!!

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CIDESCO EXAM PREP EXAM|| ACTUAL EXAM ALL QUESTIONS AND 100% CORRECT ANSWERS ALREADY GRADED A+|| LATEST UPDATE 2024 WITH VERIFIED SOLUTIONS|| ASSURED PASS!!!

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  • August 7, 2024
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1|Pag e


CIDESCO EXAM PREP EXAM|| ACTUAL EXAM
ALL QUESTIONS AND 100% CORRECT ANSWERS
ALREADY GRADED A+|| LATEST UPDATE 2024
WITH VERIFIED SOLUTIONS|| ASSURED PASS!!!
I Biological and non-biological substances both need oxygen for their existence. II
The human body consists only of biological substances. - ANSWER: I is correct
and II is incorrect


Characteristics of life include: - ANSWER: growth and metabolism


Examples of synthetic substances are: - ANSWER: plastics and silicones


Examples of organic biological substances are: - ANSWER: carbohydrates and
fats


Examples of mineral substances are: - ANSWER: paraffins and petroleum


Matter is everything that: - ANSWER: occupies space and has weight


The three forms of matter are solids, liquids and: - ANSWER: gases


What property does all matter have? - ANSWER: All matter has weight


Condensation is the change of matter from: - ANSWER: a gas to a liquid


Vapourisation is the change of matter from: - ANSWER: liquid to a gas

,2|Pag e




Melting is the change of matter from: - ANSWER: a solid to a liquid


Sublimation is the change of matter from: - ANSWER: a solid to a gas


Condensation is: - ANSWER: the change of a vapour to a liquid


The alteration of the properties of matter without the formation of any new
substance is called a/an: - ANSWER: physical change


The immediate change of a solid into a vapour is called: - ANSWER: sublimation


An example of a single-celled cellular organism is: - ANSWER: a bacterium


I. A micro-organism is the smallest part of the human body. II All micro-organisms
need nutrients for their existence. - ANSWER: I is incorrect and II is correct


Examples of bacteria are: - ANSWER: bacilli and cocci


I. Every living organism needs some non-biological substances for it's existence.
II. All non-biological substances are found as minerals in the earth. - ANSWER: I
is correct and II is incorrect


Science deals mainly with: - ANSWER: physics and chemistry


The study of the structure of the body is called: - ANSWER: anatomy

,3|Pag e


The study of the functions of living organisms is: - ANSWER: physiology


I Anatomy is a very important science in the field of biology. II Anatomy is the
science which deals with the functions of the human body. - ANSWER: I is
correct and II is incorrect


I Physiology is a very important science in the field of biology. II Physiology is the
science which deals with the functions of the body. - ANSWER: I and II are both
correct


Which one of the following belongs to the science of chemistry? - ANSWER: The
alteration of the structure of molecules


I Chemical reactions only take place outside and not inside a living organism. II
The structure of molecules change during chemical reactions. - ANSWER: I is
incorrect and II is correct


The field of physics includes: - ANSWER: heat and electricity


Which one of the following belongs to the field of physics? - ANSWER: Sound,
electricity and heat


The field of physics includes: - ANSWER: the science of electricity


An anion is: - ANSWER: A negatively charged atom


An anion is: - ANSWER: a negatively charged chloride atom (CI-)

, 4|Pag e


A cation is: - ANSWER: A positively charged sodium atom (Na+)


An electrolyte is: - ANSWER: A substance which, dissolved in water, splits into
ions


Examples of electrolytes are: - ANSWER: acids and salts


An example of an electrolyte is: - ANSWER: salt-solution


An acid is an electrolyte because: - ANSWER: it can conduct an electric current


An example of an inorganic acid is: - ANSWER: sulphuric acid


An alkali must contain: - ANSWER: metal atoms and hydroxyl group(s) (OH)


An example of an alkaline substance is: - ANSWER: soap


If a metal-oxide is dissolved in water it forms: - ANSWER: an alkali


The pH scale is used to measure the degree of acidity or: - ANSWER: alkalinity


pH can be decreased by: - ANSWER: increasing hydrogen-ions


The letter p in pH means: - ANSWER: potential


pH is: - ANSWER: the number of free H-ions in solution

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