Solution Suspension And Colloids
Solution, Suspension or Colloid?
Maddison Thorne 9.11.14
Aim:
To use first hand and secondary sources to gather, process, analyse and present information to identify examples of suspensions, colloids, and solutions and outline one advantage of a mixture being in each form.
Materials:
Four 250ml beakers
200ml of 0.01m salt solution.
200ml of colloid milk( mix two teaspoons of milk powder in 200ml of water)
200ml of suspension (muddy water, diluted water-based paint)
Filter paper
Filter funnel,
Retort stands
Laser light
Precautions:
When using laser light, make sure that the light doesn’t enter your eyes. Do not look directly at the light and make sure there are no reflections from the glass or other surfaces.
Method:
1. Take three 250ml beakers, into first pour 200ml of salt solution, into second 200ml of a dilute colloidal solution, third 200ml of a suspension.
2. Shine a laser light through each of the beakers and observe from side on.
3. Then fill about 100ml of each solution, suspension and colloidal mixture through a filter paper that sits in a filter funnel, observe whether any residue is in the filter paper.
4. Leave the remaining mixture undisturbed in the beaker and observe to see if any particles have settled out.
Results:
Mixture
Appearance from side
Residue on filter paper
Settling on stand
Solution
Clear
No
No
Colloid
Cloudy
No
No
Suspension
Murky
Yes
Yes Discussion:
A physical test the can tell the difference from a solution and a suspension is the muddy water test. A solution is a missed solution of both a solute and solvent. Whereas a suspension starts of as a solution however over time the mixture separates there is a split where the particles settle out. The difference between a colloid and suspension is that a colloid is a mixture that is cloudy are you are unable to shine a light through were in a suspension you can slightly see the beam of light come through. One advantage that a colloid is that you will never have to mix the content
Maddison Thorne 9.11.14
Aim:
To use first hand and secondary sources to gather, process, analyse and present information to identify examples of suspensions, colloids, and solutions and outline one advantage of a mixture being in each form.
Materials:
Four 250ml beakers
200ml of 0.01m salt solution.
200ml of colloid milk( mix two teaspoons of milk powder in 200ml of water)
200ml of suspension (muddy water, diluted water-based paint)
Filter paper
Filter funnel,
Retort stands
Laser light
Precautions:
When using laser light, make sure that the light doesn’t enter your eyes. Do not look directly at the light and make sure there are no reflections from the glass or other surfaces.
Method:
1. Take three 250ml beakers, into first pour 200ml of salt solution, into second 200ml of a dilute colloidal solution, third 200ml of a suspension.
2. Shine a laser light through each of the beakers and observe from side on.
3. Then fill about 100ml of each solution, suspension and colloidal mixture through a filter paper that sits in a filter funnel, observe whether any residue is in the filter paper.
4. Leave the remaining mixture undisturbed in the beaker and observe to see if any particles have settled out.
Results:
Mixture
Appearance from side
Residue on filter paper
Settling on stand
Solution
Clear
No
No
Colloid
Cloudy
No
No
Suspension
Murky
Yes
Yes Discussion:
A physical test the can tell the difference from a solution and a suspension is the muddy water test. A solution is a missed solution of both a solute and solvent. Whereas a suspension starts of as a solution however over time the mixture separates there is a split where the particles settle out. The difference between a colloid and suspension is that a colloid is a mixture that is cloudy are you are unable to shine a light through were in a suspension you can slightly see the beam of light come through. One advantage that a colloid is that you will never have to mix the content