What did you observe?
When the mixture of Jell-O is shined with the light you observe that the mixture becomes opaque or misty.
In the other two glasses the mixture remains clear
The Jell-O mixture dispereses the light while the other two glasses let the light pass through them.
What is the Tyndall effect?
The Tyndall effect is the dispersion of light by colloid particles. This happens becasue colloid particles present in the mixture are bigger than solvated particles.
Colloid particles are so small that they cannot be in the mixture, but are big enough to disperse the light.
Which glass displayed the Tyndall effect?
The glass with the Jell-O displayed the Tyndall effect.
What does that tell you about the substance in the glass?
The mixture of this glass is a colloid, because they are the only mixtures that may look clear but becomes misty when the light passes trhough them.
Which glass represents a pure substance?
Only the glass with pure water represents a pure substance, one of the glasses that did not disperse the light.
Which glass represents a solution?
The other glass that did not disperse the light is a solution.
Pure substances and solutions do not disperese water. Diluted coloids look clear but disperse light.
