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CIDESCO QUESTIONS (Natural sciences portion) Questions and answers.
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CIDESCO QUESTIONS (Natural sciencesportion)
a cathode is - correct answer-Negatively charged electrode
A cation is - correct answer-a positively charged atom
a characteristic of a weak acid is that it - correct answer-supports the natural pH of the skin
a characteristic of a weak alkali is that it - correct answer-softens the stratum corneum of the
skin
a characteristic of organic acids is that - correct answer-they contain the element carbon
A current with a constant strength used in beauty therapy is called - correct answer-galvanic
a faradic type current is... - correct answer-an interrupted galvanic current
a fuse in an electrical apparatus is - correct answer-the weakest part of the electrical circuit
a fuse in an electrical device that - correct answer-protects circuits from overloading
a galvanic current is different from faradic because - correct answer-it is more effective for
iontophoresis
a machine for iontophoresis is most likely to contain - correct answer-a rectifier and a
transformer
an acid is an electrolyte because - correct answer-it can conduct electric current
an alkali must contain - correct answer-metal atoms and hydroxyl groups (OH)
an Anion is - correct answer-a negatively charged atom
an anode is - correct answer-Positively charged electrode
an electric current is.. - correct answer-a flow of electrons
an electrolyte is - correct answer-a substance that when dissolved in water splits into ions
an example of a single-celled cellular organism is - correct answer-a bacterium
an example of an alkaline substance is - correct answer-soap
an example of an electrolyte is - correct answer-a salt solution
, an example of an inorganic acid is - correct answer-sulphuric acid
an example of an insulator is - correct answer-rubber
an indication for a treatment with infra-red rays is - correct answer-poor blood circulation in
the skin
an organic acid contains the chemical-group - correct answer-COOH
characteristics of life include.. - correct answer-growth and metabolism
condensation is the change of matter from... - correct answer-gas to liquid
disincrustation is done with a - correct answer-faradic type current machine and cathode as
the active electrode
examples of bacteria are - correct answer-bacilli and cocci
examples of electrodes which are used in beauty therapy are - correct answer-the needles
used for galvanic electrolysis
examples of electrolytes are - correct answer-acids and salts
examples of insulators are - correct answer-plastics
examples of liquid conductors are - correct answer-body fluids and alkali solutions
examples of mineral substances are - correct answer-paraffins and petroleum
examples of organic biological substances are - correct answer-carbohydrates and fats
examples of solid conductors are - correct answer-metals
examples of synthetic substances are... - correct answer-plastics and silicones
faradic type current is different from a galvanic current because - correct answer-it is more
effective for training muscles
for which treatments is galvanic current used - correct answer-Iontophoresis and
disincrustation
Hertz is a unit of - correct answer-frequency
if a metal-oxide is dissolved in water it forms - correct answer-an alkali
if the pH of a solution is between 1 and 3, the solution is a - correct answer-strong acid
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