CIDESCO EXAM PREP WITHCORRECT QUESTIONS
AND ACTUAL ANSWERS GRADED A+.
I Biological and non-biological substances both need oxygen for their
existence. II The human body consists only of biological substances. -
ANSWERS-I is correct and II is incorrect
Characteristics of life include: - ANSWERS-growth and metabolism
Examples of synthetic substances are: - ANSWERS-plastics and silicones
Examples of organic biological substances are: - ANSWERS-carbohydrates
and fats
Examples of mineral substances are: - ANSWERS-paraffins and petroleum
The three forms of matter are solids, liquids and: - ANSWERS-gases
What property does all matter have? - ANSWERS-All matter has weight
Condensation is the change of matter from: - ANSWERS-a gas to a liquid
Vapourisation is the change of matter from: - ANSWERS-liquid to a gas
Melting is the change of matter from: - ANSWERS-a solid to a liquid
Matter is everything that: - ANSWERS-occupies space and has weight
Sublimation is the change of matter from: - ANSWERS-a solid to a gas
Condensation is: - 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: - ANSWERS-physical change
,The immediate change of a solid into a vapour is called: - ANSWERS-
sublimation
An example of a single-celled cellular organism is: - ANSWERS-a
bacterium
I. A micro-organism is the smallest part of the human body. II All micro-
organisms need nutrients for their existence. - ANSWERS-I is incorrect
and II is correct
Examples of bacteria are: - ANSWERS-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. - ANSWERS-I is correct and II is incorrect
Science deals mainly with: - ANSWERS-physics and chemistry
The study of the structure of the body is called: - ANSWERS-anatomy
The study of the functions of living organisms is: - ANSWERS-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. -
ANSWERS-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. -
ANSWERS-I and II are both correct
Which one of the following belongs to the science of chemistry? -
ANSWERS-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.
- ANSWERS-I is incorrect and II is correct
,The field of physics includes: - ANSWERS-heat and electricity
Which one of the following belongs to the field of physics? - ANSWERS-
Sound, electricity and heat
The field of physics includes: - ANSWERS-the science of electricity
An anion is: - ANSWERS-A negatively charged atom
An anion is: - ANSWERS-a negatively charged chloride atom (CI-)
A cation is: - ANSWERS-A positively charged sodium atom (Na+)
An electrolyte is: - ANSWERS-A substance which, dissolved in water,
splits into ions
Examples of electrolytes are: - ANSWERS-acids and salts
An example of an electrolyte is: - ANSWERS-salt-solution
An acid is an electrolyte because: - ANSWERS-it can conduct an electric
current
An example of an inorganic acid is: - ANSWERS-sulphuric acid
An alkali must contain: - ANSWERS-metal atoms and hydroxyl group(s)
(OH)
An example of an alkaline substance is: - ANSWERS-soap
If a metal-oxide is dissolved in water it forms: - ANSWERS-an alkali
The pH scale is used to measure the degree of acidity or: - ANSWERS-
alkalinity
pH can be decreased by: - ANSWERS-increasing hydrogen-ions
, The letter p in pH means: - ANSWERS-potential
pH is: - ANSWERS-the number of free H-ions in solution
If the pH of a solution is between 5 and 7, the solution is a: - ANSWERS-
weak acid
If the pH of a solution is between 1 and 3 the solution is a: - ANSWERS-
strong acid
If the pH of a solution is between 7 and 9 the solution is a: - ANSWERS-
weak alkali
If the pH of a solution is between 12 and 14 the solution is: - ANSWERS-
strong alkali
The pH of distilled water is: - ANSWERS-7
Lemon juice, with a pH reading of about 2, is considered to be: -
ANSWERS-acid
Pure water, with a pH of 7, is considered to be: - ANSWERS-neutral
Substances having a pH value above 9.5 are considered to be: -
ANSWERS-alkaline
The pH of the skin's acid mantle is: - ANSWERS-5.5
A characteristic of a weak acid is that it: - ANSWERS-supports the natural
pH of the skin
A characteristic of a weak alkali is that it: - ANSWERS-softens the stratum
corneum of the skin
The effect of a strong acid is: - ANSWERS-corrosive and therefore of no
use in beauty therapy
AND ACTUAL ANSWERS GRADED A+.
I Biological and non-biological substances both need oxygen for their
existence. II The human body consists only of biological substances. -
ANSWERS-I is correct and II is incorrect
Characteristics of life include: - ANSWERS-growth and metabolism
Examples of synthetic substances are: - ANSWERS-plastics and silicones
Examples of organic biological substances are: - ANSWERS-carbohydrates
and fats
Examples of mineral substances are: - ANSWERS-paraffins and petroleum
The three forms of matter are solids, liquids and: - ANSWERS-gases
What property does all matter have? - ANSWERS-All matter has weight
Condensation is the change of matter from: - ANSWERS-a gas to a liquid
Vapourisation is the change of matter from: - ANSWERS-liquid to a gas
Melting is the change of matter from: - ANSWERS-a solid to a liquid
Matter is everything that: - ANSWERS-occupies space and has weight
Sublimation is the change of matter from: - ANSWERS-a solid to a gas
Condensation is: - 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: - ANSWERS-physical change
,The immediate change of a solid into a vapour is called: - ANSWERS-
sublimation
An example of a single-celled cellular organism is: - ANSWERS-a
bacterium
I. A micro-organism is the smallest part of the human body. II All micro-
organisms need nutrients for their existence. - ANSWERS-I is incorrect
and II is correct
Examples of bacteria are: - ANSWERS-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. - ANSWERS-I is correct and II is incorrect
Science deals mainly with: - ANSWERS-physics and chemistry
The study of the structure of the body is called: - ANSWERS-anatomy
The study of the functions of living organisms is: - ANSWERS-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. -
ANSWERS-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. -
ANSWERS-I and II are both correct
Which one of the following belongs to the science of chemistry? -
ANSWERS-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.
- ANSWERS-I is incorrect and II is correct
,The field of physics includes: - ANSWERS-heat and electricity
Which one of the following belongs to the field of physics? - ANSWERS-
Sound, electricity and heat
The field of physics includes: - ANSWERS-the science of electricity
An anion is: - ANSWERS-A negatively charged atom
An anion is: - ANSWERS-a negatively charged chloride atom (CI-)
A cation is: - ANSWERS-A positively charged sodium atom (Na+)
An electrolyte is: - ANSWERS-A substance which, dissolved in water,
splits into ions
Examples of electrolytes are: - ANSWERS-acids and salts
An example of an electrolyte is: - ANSWERS-salt-solution
An acid is an electrolyte because: - ANSWERS-it can conduct an electric
current
An example of an inorganic acid is: - ANSWERS-sulphuric acid
An alkali must contain: - ANSWERS-metal atoms and hydroxyl group(s)
(OH)
An example of an alkaline substance is: - ANSWERS-soap
If a metal-oxide is dissolved in water it forms: - ANSWERS-an alkali
The pH scale is used to measure the degree of acidity or: - ANSWERS-
alkalinity
pH can be decreased by: - ANSWERS-increasing hydrogen-ions
, The letter p in pH means: - ANSWERS-potential
pH is: - ANSWERS-the number of free H-ions in solution
If the pH of a solution is between 5 and 7, the solution is a: - ANSWERS-
weak acid
If the pH of a solution is between 1 and 3 the solution is a: - ANSWERS-
strong acid
If the pH of a solution is between 7 and 9 the solution is a: - ANSWERS-
weak alkali
If the pH of a solution is between 12 and 14 the solution is: - ANSWERS-
strong alkali
The pH of distilled water is: - ANSWERS-7
Lemon juice, with a pH reading of about 2, is considered to be: -
ANSWERS-acid
Pure water, with a pH of 7, is considered to be: - ANSWERS-neutral
Substances having a pH value above 9.5 are considered to be: -
ANSWERS-alkaline
The pH of the skin's acid mantle is: - ANSWERS-5.5
A characteristic of a weak acid is that it: - ANSWERS-supports the natural
pH of the skin
A characteristic of a weak alkali is that it: - ANSWERS-softens the stratum
corneum of the skin
The effect of a strong acid is: - ANSWERS-corrosive and therefore of no
use in beauty therapy
