Question

substance X on hating gives Y $ Z. Is X is compound or a element

Answer 1

1) If a substance X on heating gives two different substances Y and Z, then the substance is a compound and not an element. Both elements and compounds are pure substances. However, an element is composed of only one type of particles, while a compound consists of two or more atoms of different elements, combined in a fixed ratio by mass. For example carbon is an element composed of only carbon atoms while NaHCO3, CaCO3 are compounds composed of atoms of more that one element. Hence if we are obtaining two substances by heating substance X, it means that the X itself is composed of two different types of atoms. Thus X is a compound.
2) Elements are the pure substances which consists of only one type of particles. These particles can be atoms or molecules. For example Carbon is made up of only carbon atoms, Hydrogen gas consists of Hydrogen molecules (formed from two atoms of Hydrogen) etc.
A compound on the other hand, is a pure substance which consists of two or more atoms of different elements, combined in a fixed ratio by mass. Also the properties of a compound are entirely different from that of the combining elements. Some examples of compound include water (formed from atoms of two elements-oxygen and hydrogen), sodium chloride (formed from sodium and chlorine), ammonia etc.

Answer 2

HIYA !

the substance "X" is a compound

because,,,,

ELEMENTS _____react to form______COMPOUNDS

⇒ an element is composed of only one type particles,,,while compounds consists of two or more atoms of different elements,,combined in a fixed ratio by mass

HENCE X IS THE COMPOUND

wIsH iT hElPs yOu

@_@