CHEM 103 LAB 3 QUANTITATIVE QUALITATIVE
ANALYSIS ENTRY 2026 STUDY GUIDE
COMPLETE QUESTIONS AND ANSWERS
◉ Filtering flask. Answer:
◉ Beaker. Answer:
◉ Graduated cylinder. Answer:
◉ Buret. Answer:
◉ Buchner funnel. Answer:
◉ Evaporating dish. Answer:
◉ Crucible. Answer:
◉ Watch glass. Answer:
◉ Crucible tongs. Answer:
,◉ Disposable dropper pipet. Answer:
◉ Accuracy. Answer: The closeness of the value to the correct value
◉ Pricision. Answer: The range of error, tolerance, or uncertainty
around the measurement
◉ Significant Figure Rules. Answer: 1. all non-zeros are significant
2. zeros in the middle are ALWAYS significant
3. zeros at the start ar NEVER significant
4. zeros at the end are not significant unless a decimal point is
present
◉ Adding or subtracting sig figs. Answer: Round to the least number
of decimal places
◉ Multiplying or dividing sig figs. Answer: Round to least number of
sig figs
◉ Formula for density. Answer: D = mass/volume
◉ Decantation. Answer: Pouring a liquid off a solid
, ◉ Filtration. Answer: Separation of a solid from a liquid by pouring
the mixture through a semipermeable barrier which allows only the
liquid to pass through
◉ Extraction. Answer: Adding a solvent to a mixture that dissolves
only one of the components
◉ Sublimation. Answer: Changing a solid into a gas without the
intermediate liquid state
◉ Evaporation. Answer: Removing a liquid from a mixture by
turning it into a gas
◉ Examples of separation techniques. Answer: 1. Decantation
2. Filtration
3. Extraction
4. Sublimation
5. Evaporation
◉ What happens in Lab 2: Separations?. Answer: Create a mixture of
50:50 sand and salt. Dissolve the salt using DI water, then filter it
using gravity filtration or vacuum filtration. Dry the sand residue
ANALYSIS ENTRY 2026 STUDY GUIDE
COMPLETE QUESTIONS AND ANSWERS
◉ Filtering flask. Answer:
◉ Beaker. Answer:
◉ Graduated cylinder. Answer:
◉ Buret. Answer:
◉ Buchner funnel. Answer:
◉ Evaporating dish. Answer:
◉ Crucible. Answer:
◉ Watch glass. Answer:
◉ Crucible tongs. Answer:
,◉ Disposable dropper pipet. Answer:
◉ Accuracy. Answer: The closeness of the value to the correct value
◉ Pricision. Answer: The range of error, tolerance, or uncertainty
around the measurement
◉ Significant Figure Rules. Answer: 1. all non-zeros are significant
2. zeros in the middle are ALWAYS significant
3. zeros at the start ar NEVER significant
4. zeros at the end are not significant unless a decimal point is
present
◉ Adding or subtracting sig figs. Answer: Round to the least number
of decimal places
◉ Multiplying or dividing sig figs. Answer: Round to least number of
sig figs
◉ Formula for density. Answer: D = mass/volume
◉ Decantation. Answer: Pouring a liquid off a solid
, ◉ Filtration. Answer: Separation of a solid from a liquid by pouring
the mixture through a semipermeable barrier which allows only the
liquid to pass through
◉ Extraction. Answer: Adding a solvent to a mixture that dissolves
only one of the components
◉ Sublimation. Answer: Changing a solid into a gas without the
intermediate liquid state
◉ Evaporation. Answer: Removing a liquid from a mixture by
turning it into a gas
◉ Examples of separation techniques. Answer: 1. Decantation
2. Filtration
3. Extraction
4. Sublimation
5. Evaporation
◉ What happens in Lab 2: Separations?. Answer: Create a mixture of
50:50 sand and salt. Dissolve the salt using DI water, then filter it
using gravity filtration or vacuum filtration. Dry the sand residue
