Chemistry Extraction Process Quiz

What is the purpose of adding water to a mixture of sand and salt during the extraction process?

• To dissolve the sand

• To dissolve the salt

• To make the mixture easier to heat

• To increase the weight of the mixture

What is the next step after a solid settles to the bottom of the beaker in the decanting process?

• Heat the beaker to evaporate the liquid

• Add more solvent to the mixture

• Decant the liquid, leaving the solid behind

• Stir the mixture again

What is the purpose of wetting the filter paper with distilled water before filtration?

• To make it easier to fold the paper

• To prevent air pockets between the paper and the funnel

• To make the paper transparent

• To clean the paper before use

What should you attach the pressurized rubber tubing to when setting up for extraction and filtration?

• The vertical arm of the T

• The horizontal arm of the T

• Directly to the faucet

• The neck of the Büchner funnel

How can you check for a vacuum when attaching the rubber tubing to the side arm of a filter flask?

• By turning the water on and off repeatedly

• By listening for a hissing sound

• By placing the palm of your hand over the opening of the Erlenmeyer flask and feeling for a pull

• By looking for bubbles in the tubing

What is the correct position of the stopper when inserting a Büchner funnel into a one-hole rubber stopper?

• At the very top of the funnel neck

• Halfway up the neck of the funnel

• Two-thirds to three-fourths up the neck of the funnel

• At the base of the funnel neck

What should you use to rinse all of the mixture from the beaker into the funnel during filtration?

• A pipette

• A wash bottle

• A stirring rod

• A graduated cylinder