random
Give an example of a common mixture
Air, salt water, etc, etc
What word do we use to describe the liquid that does the dissolving?
Solvent
What technique would be the best to use to separate sand and water?
Filtration
What piece of equipment do we use to heat substances?
Bunsen burner
Give two general safety precautions that should be taken when using Bunsen burners.
Tie long hair back.
Stand up.
Wear safety glasses.
What piece of kitchen equipment could you use to separate stones from some muddy water?
Sieve
What word describes the solid that gets dissolved in a solution?
Solute
What would be the best technique to get salt from a salt water solution?
evaporation / crystallisation
What piece of equipment would you use to hold things above a Bunsen burner?
Tripod
What should you do if you break a piece of glass equipment?
Don't touch it.
Tell the teacher.
What is the name of the piece of glassware used to filter substances into?
Conical flask.
What word describes something that will not dissolve?
Insoluble
What technique would be the best to separate different coloured dyes or inks?
Chromatography
What is the name of the piece of equipment that you place the filter paper into during filtration?
(Filter) funnel
Before putting it away, how should you check to see if a piece of equipment is too hot?
Put the back of your fingers close to it.
In filtration, what do we call the solid that gets left on the filter paper?
Residue
What could you do to a solution to increase it's solubility (allow it to dissolve more solid)?
Heat it up
What technique would be the best to use to get pure water from sea water?
Distillation
What is the name of the piece of equipment that you would heat during crystallisation?
Evaporating basin
Apart from the use of a Bunsen burner, name one other danger involved during crystallisation
Spitting, if heated too much
In filtration, what is the name of the liquid that passes through the filter paper?
Filtrate.
What do we call a solution that cannot dissolve any more solid
Saturated
Distillation has two steps, what are they?
Evaporation and condensation
What is the name of the piece of equipment that is used to cool the gas back to a liquid during distillation?
Condenser
Name one specific safety precaution that should be taken when heating a solution during crystallisation.
Do not heat the mixture to dryness