AALSO Water Quality Level 1 Questions
and Answers Verified 100% Correct
What does ORP stand for?
oxidation-reduction potential
Define "Oxidation-reduction potential"
The electrical potential required to transfer electrons from one compound or element (the
oxidant) to another compound or element (the reductant); in water quality, this result is
the net status of all oxidation and reduction reactions in the sample being measured.
What unit is used for oxidation-reduction potential (ORP)?
millivolts
Define "oxidant"
A reactant that oxidizes or removes electrons from other reactants during a redox reaction
Define "oxidation"
A chemical reaction involving the gain of oxygen, or loss of electrons
What does a positive ORP result indicate?
An oxidizing environment
What does a negative ORP result indicate?
A reducing environment
Define "ozone" (water quality definition)
, An unstable gas that is toxic to humans and has a strong odor; a strong oxidizing agent
What is the chemical composition of ozone?
O3
Define "pH"
An expression of the intensity of the basic or acidic condition of a liquid
Define "random error"
Unpredictable errors that average out, and have a varying magnitude; errors outside of
one's control
Define "reagent blank"
A blank that is processed like a sample and can be used to zero or subtract out the
small positive error that may arise in the reagents
What does SDS stand for?
Safety Data Sheet
Define "Safety data sheet"
A document that provides pertinent information and a profile of a particular
hazardous substance or mixture
Who adopted that GHS?
The UN
What aspects are required to be on an SDS?
1) Product or chemical identifier
2) Hazards identification
3) Composition/Information on ingredients
4) First-aid measures
and Answers Verified 100% Correct
What does ORP stand for?
oxidation-reduction potential
Define "Oxidation-reduction potential"
The electrical potential required to transfer electrons from one compound or element (the
oxidant) to another compound or element (the reductant); in water quality, this result is
the net status of all oxidation and reduction reactions in the sample being measured.
What unit is used for oxidation-reduction potential (ORP)?
millivolts
Define "oxidant"
A reactant that oxidizes or removes electrons from other reactants during a redox reaction
Define "oxidation"
A chemical reaction involving the gain of oxygen, or loss of electrons
What does a positive ORP result indicate?
An oxidizing environment
What does a negative ORP result indicate?
A reducing environment
Define "ozone" (water quality definition)
, An unstable gas that is toxic to humans and has a strong odor; a strong oxidizing agent
What is the chemical composition of ozone?
O3
Define "pH"
An expression of the intensity of the basic or acidic condition of a liquid
Define "random error"
Unpredictable errors that average out, and have a varying magnitude; errors outside of
one's control
Define "reagent blank"
A blank that is processed like a sample and can be used to zero or subtract out the
small positive error that may arise in the reagents
What does SDS stand for?
Safety Data Sheet
Define "Safety data sheet"
A document that provides pertinent information and a profile of a particular
hazardous substance or mixture
Who adopted that GHS?
The UN
What aspects are required to be on an SDS?
1) Product or chemical identifier
2) Hazards identification
3) Composition/Information on ingredients
4) First-aid measures
