CIDESCO Exam Prep| 805 QUESTIONS| 44 PAGES| WITH COMPLETE SOLUTIONS

I Biological and non-biological substances both need oxygen for their existence. II The human body consists only of biological substances. CORRECT ANSWERS: I is correct and II is incorrect Characteristics of life include: CORRECT ANSWERS: growth and metabolism Examples of synthetic substances are: CORRECT ANSWERS: plastics and silicones Examples of organic biological substances are: CORRECT ANSWERS: carbohydrates and fats Examples of mineral substances are: CORRECT ANSWERS: paraffins and petroleum Matter is everything that: CORRECT ANSWERS: occupies space and has weight The three forms of matter are solids, liquids and: CORRECT ANSWERS: gases What property does all matter have? CORRECT ANSWERS: All matter has weight Condensation is the change of matter from: CORRECT ANSWERS: a gas to a liquid Vapourisation is the change of matter from: CORRECT ANSWERS: liquid to a gas Melting is the change of matter from: CORRECT ANSWERS: a solid to a liquid Sublimation is the change of matter from: CORRECT ANSWERS: a solid to a gas Condensation is: CORRECT ANSWERS: 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 ANSWERS: physical change The immediate change of a solid into a vapour is called: CORRECT ANSWERS: sublimation An example of a single-celled cellular organism is: CORRECT ANSWERS: a bacterium I. A micro-organism is the smallest part of the human body. II All micro-organisms need nutrients for their existence. CORRECT ANSWERS: I is incorrect and II is correct Examples of bacteria are: CORRECT ANSWERS: bacilli and cocci I. Every living organism needs some non-biological substances for i