Filtration
What is filtration?
This technique is used to separate an insoluble solid from a liquid.
What is evaporation?
The process where a liquid turns into a gas, leaving a dissolved solid behind.
What is filter paper?
The special paper with tiny holes used to separate a solid from a liquid.
What is the best method to separate sand from water.
Filtration.
What is the residue?
The solid particles that get trapped and left behind in the filter paper.
What is salt (the solute)?
The substance you get to keep when you evaporate salty water.
What is an evaporating dish?
The ceramic bowl used to heat a solution and drive off the solvent.
What is the best method to recover salt from saltwater solution?
Evaporation
What is the filtrate?
The clear liquid that passes through the filter paper.
What happens to water (the solvent)?
It is lost to the air when being heated.
What is a funnel?
The cone-shaped equipment used to hold the filter paper.
What is the first step to separate a sand and salt mixture?
Adding water
What is being insoluble?
The property of a solid, like sand in water, that allows it to be separated by filtration.
Why do you heat the evaporation dish gently?
To prevent the solution from spitting and losing solid from the dish.
What is a tripod, gauze, and Bunsen burner?
The three items that make up the stand used to hold a beaker for filtration or an evaporating dish for heating.
Which of the two techniques, filtration or evaporation, can be used to separate pasta from water?
Filtration