CIDESCO EXAM/CIDESCO PRACTICE EXAM/CIDESCO STUDYGUIDE NEWEST 2025 ACTUAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+

CIDESCO EXAM/CIDESCO PRACTICE EXAM/CIDESCO STUDYGUIDE
NEWEST 2025 ACTUAL EXAM QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+

I Biological and non-biological substances both need oxygen for their existence. II
The human body consists only of biological substances. - CORRECT->I is correct
and II is incorrect



Characteristics of life include: - CORRECT->growth and metabolism



Examples of synthetic substances are: - CORRECT->plastics and silicones



Examples of organic biological substances are: - CORRECT->carbohydrates and fats



Examples of mineral substances are: - CORRECT->paraffins and petroleum



Matter is everything that: - CORRECT->occupies space and has weight



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



What property does all matter have? - CORRECT->All matter has weight



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

,Vapourisation is the change of matter from: - CORRECT->liquid to a gas



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



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



Condensation is: - CORRECT->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: - CORRECT->physical change



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



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



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



Examples of bacteria are: - CORRECT->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. - CORRECT->I is
correct and II is incorrect



Science deals mainly with: - CORRECT->physics and chemistry



The study of the structure of the body is called: - CORRECT->anatomy



The study of the functions of living organisms is: - CORRECT->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. - CORRECT->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. - CORRECT->I and II are both
correct



Which one of the following belongs to the science of chemistry? - CORRECT->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. - CORRECT->I is
incorrect and II is correct

, The field of physics includes: - CORRECT->heat and electricity



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



The field of physics includes: - CORRECT->the science of electricity



An anion is: - CORRECT->A negatively charged atom



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



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



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



Examples of electrolytes are: - CORRECT->acids and salts



An example of an electrolyte is: - CORRECT->salt-solution



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



An example of an inorganic acid is: - CORRECT->sulphuric acid