Give examples of physical bodies consisting of the same substance.

1) Diamond and pencil lead (composed of carbon);
2) Glass and bottle (made of silicon);
3) Blade, sword, spoon, nail, rails, roof, car (body, parts), tin can (consist of iron).



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.