No
A torch can be used to test a colloid by shining the light through the colloid. If the colloid scatters the light making it visible (Tyndall effect), then it is a colloid. This is because the particles in the colloid are large enough to scatter light, unlike particles in a solution which are too small.
Yes, light can shine through a colloid because the particles in a colloid are small enough to allow light to pass through without scattering it. This is why colloids appear transparent or translucent.
A light wave would not be able to pass through a opaque medium, such as a solid wall or a thick sheet of metal, that does not allow any light to pass through.
Colloid silver first passes into the stomach, most of it will continue on that path out of the body. Some is absorbed into the blood stream though and able to pass with-out issue.
Whipped cream is an example of a colloid that you can see through. It consists of tiny air bubbles dispersed in a liquid, giving it a cloudy appearance while still allowing light to pass through.
opaque
Yes, light can pass through an opaque material if it is transparent or translucent. However, if the material is completely opaque, light will not be able to pass through it.
Yes, light is able to pass through a suspension. A suspension is a heterogeneous mixture where particles are temporarily dispersed in a medium, but they are not dissolved. Light can interact with the particles in the suspension, causing it to scatter or be absorbed to some extent, but some of the light can still pass through.
horizontal waves only
The Tyndall effect can be used to distinguish between a colloid and a solution by shining a light through the substance. In a colloid, the light will scatter due to the larger particles present, making the beam visible. In a solution, the light will pass straight through without scattering, making the beam less visible.
horizontal waves only
Opaque means that light does not pass through, resulting in an object being not transparent. Translucent means that light is able to pass through, but the object is not fully transparent and scatters the light.