GENERAL CHEMISTRY I WITH LAB
CERTIFICATION TEST PAPER 2026 FULL
QUESTIONS AND CORRECT ANSWERS
GRADED A+
● Burette. Answer: Glassware that measures volume in milliliters (mL),
numbers are in the opposite direction (0 at the top, 100 at the bottom),
used for titration, read to the hundredths place.
● Erlenmeyer Flask. Answer: Glassware that is usually used for titration
collection due to its lack of spilling.
● Volumetric Flask. Answer: Glassware that is calibrated to a specific
volume, usually used for dilutions.
● Volumetric Pipette. Answer: Glassware that allows for precise
measurements of volume (up to 4 sig figs), used with a large bulb.
● 10% Rule. Answer: Determines how accurately we can read an
instrument, The uncertainty in the instrument is 10% of the smallest
divisions.
e.g. Since 10% of 0.2 is 0.02, we should read this instrument to the
nearest 0.02 mL and report our answer as ± 0.02 mL.
, ● Density. Answer: The amount of matter in a substance.
● Percent Error. Answer: Determines the precision of calculations
performed in the experiment.
● Chromatography Paper. Answer: A separation method which exploits
molecular structure . Some molecules will be more attracted to the
surface than others and therefor capillaries of the paper will push
pigments upwards.
● Filtration. Answer: A separation method that exploits phase state or
particle size. Often used to separate a solution of solids from liquids.
e.g. salt and sand mixture
● Distillation. Answer: A separation method that exploits differences in
boiling point. When a mixture is heated, the lower boiling substance will
boil off (become a vapor) first leaving behind the higher boiling
substance(s). The vapor must be recondensed and allowed to collect in a
separate container.
e.g. water, copper (II) sulfate and dirtB
● Magnetism. Answer: A separation method in which components of a
mixture may be separated by using a magnet if one of the substances is
attracted to the magnet and the other is not.
e.g. iron filings from powdered sulfur
CERTIFICATION TEST PAPER 2026 FULL
QUESTIONS AND CORRECT ANSWERS
GRADED A+
● Burette. Answer: Glassware that measures volume in milliliters (mL),
numbers are in the opposite direction (0 at the top, 100 at the bottom),
used for titration, read to the hundredths place.
● Erlenmeyer Flask. Answer: Glassware that is usually used for titration
collection due to its lack of spilling.
● Volumetric Flask. Answer: Glassware that is calibrated to a specific
volume, usually used for dilutions.
● Volumetric Pipette. Answer: Glassware that allows for precise
measurements of volume (up to 4 sig figs), used with a large bulb.
● 10% Rule. Answer: Determines how accurately we can read an
instrument, The uncertainty in the instrument is 10% of the smallest
divisions.
e.g. Since 10% of 0.2 is 0.02, we should read this instrument to the
nearest 0.02 mL and report our answer as ± 0.02 mL.
, ● Density. Answer: The amount of matter in a substance.
● Percent Error. Answer: Determines the precision of calculations
performed in the experiment.
● Chromatography Paper. Answer: A separation method which exploits
molecular structure . Some molecules will be more attracted to the
surface than others and therefor capillaries of the paper will push
pigments upwards.
● Filtration. Answer: A separation method that exploits phase state or
particle size. Often used to separate a solution of solids from liquids.
e.g. salt and sand mixture
● Distillation. Answer: A separation method that exploits differences in
boiling point. When a mixture is heated, the lower boiling substance will
boil off (become a vapor) first leaving behind the higher boiling
substance(s). The vapor must be recondensed and allowed to collect in a
separate container.
e.g. water, copper (II) sulfate and dirtB
● Magnetism. Answer: A separation method in which components of a
mixture may be separated by using a magnet if one of the substances is
attracted to the magnet and the other is not.
e.g. iron filings from powdered sulfur
