solutions suspensions colloids

Question 1

define suspensions (7)

Answer 1

settles out/separate into different layers when it is no longer agitated
settling out is called sedimentation where rates varies with the size of suspended particles
heterogenous mixture
separates into layers over time
particles trapped by filter paper
cloudy in appearance
sand and water

Question 2

define colloids (7)

Answer 2

contain some particles intermediate in size
at macroscopic level, appear homogenous
at microscopic level, appear heterogeneous
do not separate into layers
cannot use filters to separate parts of a colloid
scattering of light property can be used to separate them from other mixtures

Question 3

define solutions

Answer 3

formed when substances dissolve and form homogenous mixture
do not separate into distinct layers over time
most transparent
will not leave trapped substances when poured through filter
allows light to pass through
do not have Tyndall effect because particles not large enough