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Materials : Metals and Non-Metals — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceMaterials : Metals and Non-Metals1 Mark
MCQ
Consider the following statements and choose the incorrect one:
  • A
    Atom is the smallest part of an element.
  • B
    An element is a substance which is made up of only one kind of atoms.
  • ✓
    An atom of liquid sulphur or vapour forms of sulphur would be different as that of solid sulphur.
  • D
    Oxygen and nitrogen are two examples of elements.
✓

Answer

Correct option: C.
An atom of liquid sulphur or vapour forms of sulphur would be different as that of solid sulphur.
A substance which cannot be broken down into two or more simpler substances by chemical reaction is called an element. The smallest particle of an element is called atom. An element is a substance which is made up of only one kind of atoms. The atoms of an element remain unaffected by the physical changes in the element. Thus, an atom of liquid sulphur or vapour forms of sulphur would be same as that of solid sulphur.

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