One cannot decide whether a material is made up of asbestos or not just by looking at it unless there is a label
Some of these may be easy to identify but it should be noted that though the presence of asbestos may be presumed with a visual inspection, it can be confirmed only after taking a sample of the material and getting it analyzed in an accredited laboratory.
It is preferable to hire qualified personnel to take the sample for analysis in order to prevent fiber release. A professional will know what precautions should be taken and what should be looked for.
Moreover, there is an increased health risk if asbestos fibers get released during sampling, in fact, if performed incorrectly, it can prove more hazardous than just leaving it as it is. Therefore, it is highly recommended to treat all materials as though they contain asbestos and undertake analysis of material in doubt.