Question

Make a classification key for the following groups of substances. a. rubber, paper, steel plate, glass.

Answer 1

Classification of Substances

1. The substances is classified firstly on the basis of either they float or sink.
2. Then they are inflammable or Flammable means they are able or not able to catch fire easily.
3. They are also further classified into transparent translucent or opaque by which substance view can be detected.
4. Rubber, Glass, Paper and steel plate can be classified as: Float: Paper, Sink: Glass, Rubber, Steel plate
5. Flammable: Rubber, Non-flammable: Glass and steel plate.
6. Transparent: Glass, Opaque: Steel.

Therefore, from the following ways classification of substances can be done.