CIDESCO Exam 2024 Questions & Answers |
100% Correct | Verified
Characteristics of life include: - ✔✔Growth and metabolism
Example of organic biological substances are: - ✔✔Carbohydrates and fats
Examples of mineral substances are: - ✔✔Paraffin's and petroleum
Matter is everything that: - ✔✔Occupies space and has weight
What property does all matter have? - ✔✔All matter has weight
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 called? -
✔✔Physical change
The immediate change of a solid into vapour is called? - ✔✔Sublimation
An example of a single called cellular organism is? - ✔✔A bacterium
Examples of bacteria are? - ✔✔Bacilli and cocci
Which of the following belongs to the science of chemistry? - ✔✔The alternation of the structure of
molecules
An electrolyte is? - ✔✔A substance which, dissolved in water and splits into ION's
, Example of electrolytes are? - ✔✔Acids and salts
An example of an electrolyte is? - ✔✔Salt solution
An acid is an electrolyte because? - ✔✔It can conduct an electrical current
An example of an inorganic acid is? - ✔✔Sulphuric acid
An alkali must contain? - ✔✔Metal atoms and hydroxyl groups
If metal oxide is dissolved in water it forms? - ✔✔An alkali
PH can be decreased by? - ✔✔Increasing hydrogen ions
pH is? - ✔✔The number of free H ions in a solution
The pH of the skins acid mantle is? - ✔✔5.5
A characteristic of a weak acid is that it? - ✔✔Supports the natural pH of the skin
A characteristic of organic acids is that? - ✔✔They contain the element carbon
Organic acids are found in? - ✔✔Sebum and plants
An organic acid contains the chemical group? - ✔✔COOH
100% Correct | Verified
Characteristics of life include: - ✔✔Growth and metabolism
Example of organic biological substances are: - ✔✔Carbohydrates and fats
Examples of mineral substances are: - ✔✔Paraffin's and petroleum
Matter is everything that: - ✔✔Occupies space and has weight
What property does all matter have? - ✔✔All matter has weight
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 called? -
✔✔Physical change
The immediate change of a solid into vapour is called? - ✔✔Sublimation
An example of a single called cellular organism is? - ✔✔A bacterium
Examples of bacteria are? - ✔✔Bacilli and cocci
Which of the following belongs to the science of chemistry? - ✔✔The alternation of the structure of
molecules
An electrolyte is? - ✔✔A substance which, dissolved in water and splits into ION's
, Example of electrolytes are? - ✔✔Acids and salts
An example of an electrolyte is? - ✔✔Salt solution
An acid is an electrolyte because? - ✔✔It can conduct an electrical current
An example of an inorganic acid is? - ✔✔Sulphuric acid
An alkali must contain? - ✔✔Metal atoms and hydroxyl groups
If metal oxide is dissolved in water it forms? - ✔✔An alkali
PH can be decreased by? - ✔✔Increasing hydrogen ions
pH is? - ✔✔The number of free H ions in a solution
The pH of the skins acid mantle is? - ✔✔5.5
A characteristic of a weak acid is that it? - ✔✔Supports the natural pH of the skin
A characteristic of organic acids is that? - ✔✔They contain the element carbon
Organic acids are found in? - ✔✔Sebum and plants
An organic acid contains the chemical group? - ✔✔COOH
