If a material is to conduct electricity, it must have charges, and they must be free to move. Metals fit these criteria because they have charged electrons and they are in delocalised orbitals which means that they can move in an electric field. Graphite has a similar delocalised bond. Ionic compounds contain charged ions which are free to move when the compound is melted or dissolved in water.
Conductors (metals).
Material with low conductance such as rubber, plastics and so forth.
Material with low conductance such as rubber, plastics and so forth.
Transparent materials will always allow light to pass through, translucent materials will allow light to pass through as well but the light rays will be scattered. Opaque materials will not allow any light to pass through.
yes, materials pass in and out of the nuclear envelope through the nuclear pores
yes, materials pass in and out of the nuclear envelope through the nuclear pores
Transparent materials allow light to freely pass through them. Translucent materials also allow light to pass through them, but change the colour of the light.
Opaque materials do not allow light to pass through them.
membrane
What you are considering when you are referring to how easily materials can pass through a membrane is how permeable the cell wall or membrane is.
Shade cloth Answer: Assuming we are talking about substances, not sewing materials, there are several different kinds: Transparent materials allow light and images to pass through. Example: water, glass Partially transparent materials allow some light and images to pass through.Example: colored water, sunglasses Translucent materials allow light, but not images, to pass through. Example: white lamp globe, rice paper Partially translucent materials allow some light, but not images, to pass through. Example: colored lampshade, colored tissue paper Opaque materials absorb or reflect light. Example: book, rock, wood Specular materials reflect light and images. Example: Mirror, Garden gazing ball
Opaque.
Translucent materials allow some light to pass through. Transparent materials allow most or all light to pass through.