Question

Classify the substances given in Fig. into elements and compounds?

Answer 1

Elements:

• Element is known as a basic form of matter that cannot be broken down into simpler substances by chemical reactions.
• These are the simplest chemical substances in which all the atoms are exactly the same.
• Elements are generally known as pure substances as they are composed of only one type of atom.

Compounds:

• A compound is known as a substance composed of two or more elements.
• These are generally formed by chemically combining with one another in a fixed proportion.

Classification of the given substances in Figure :

• Elements:$\mathrm{Copper}\left(\mathrm{Cu}\right),\mathrm{Zinc}\left(\mathrm{Zn}\right),\mathrm{Oxygen}\left({\mathrm{O}}_2\right),\mathrm{Fluorine}\left({\mathrm{F}}_2\right),\mathrm{Mercury}\left(\mathrm{Hg}\right),\mathrm{Diamond}$
• Compounds: $\mathrm{NaCl}(\mathrm{Sodium}\mathrm{chloride}),{\mathrm{H}}_2\mathrm{O}\left(\mathrm{Water}\right),{\mathrm{CaCO}}_3(\mathrm{Calcium}\mathrm{carbonate}).$

Hence, the given substances have been classified into respective elements and compounds.