The periodic table is a systematic arrangement of the elements. They are arranged according to their atomic number, the number of protons (which in the case of atoms is also the number of electrons) of each atom.
Answer:
Melting is a physical change with no change in temperature of the substance while when the object is set on fire, its temperature changes.
Explanation:
Melting cause physical change in any substance. The temperature of the substance remain same but the physical property changes i.e in melting substance changes its state from solid to liquid.
However, in case of setting a substance on fire the temperature changes along with the state of the substance.
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