separation techniques & mixtures
DESCRIPTION
Separation techniques & mixtures. CHOOSE JUST ONE ANSWER A, B, C, OR D. A. Sand. B. chalk. C. Salt. Sulphur. D. Question 1. Which of these solids dissolves in water?. Wrong Answer!. salt. Try Again. A. To separate a solid from a liquid. B. To separate two liquids. C. - PowerPoint PPT PresentationTRANSCRIPT
Separation techniques & mixtures
CHOOSE JUST ONE ANSWER A, B, C, OR D
Question 1
Which of these solids dissolves in water?
Sand chalk
SulphurSalt
Wrong Answer!salt
To crystallise salt
Question 2
When can filtration be used?
To separate a solid from a liquid
To separate two liquids
To separate a mixture of different coloured dyes
Wrong Answer!To separate a solid from a liquid
Question 3
During filtration, an insoluble solid collects in the filter paper. What is this called?
solute filtrate
residuesolvent
Wrong Answer!residue
Question 4
During filtration a liquid passes through the filter paper. What is this called?
chalk residue
insolublefiltrate
Wrong Answer!filtrate
Question 5
Which techniques could be used to get salt from a dry mixture of salt and sand
Dissolve the salt, filter the solution, recrystallise the salt
chromatography
Filter the dry mixture, crystallise the salt
Fractional distillation
Wrong Answer!Dissolve the salt, filter the solution, recrystallise the salt
Question 6
Sea water is a mixture, what does it consist of….?
Salt and gases water
Water, salt and gases
Water and salt
Wrong Answer!Water, salt and gases
Question 7
Which of these is a mixture?
oxygen Air
Quartz Copper sulphate
Wrong Answer!Air
Question 8
Which of these is not a mixture?
Sea water Calcium carbonate
Air Granite
Wrong Answer!Granite
Question 9
Which of these statement is true?
Mixtures have a fixed composition
In mixtures the atoms or compounds are joined together
Mixtures do not have a fixed composition
Mixtures are hard to separate
Wrong Answer!Mixtures do not have a fixed composition
Question 10
Which of these statement is true?
Compounds are easy to separate
Compounds have a fixed composition
In compounds the atoms or particles are not joined together
Compounds do not have a fixed composition
Wrong Answer!Compounds have a fixed composition
Congratulations!
• Your are great, well done.