Due to the presence of much smaller spaces amongst the particles of solids and liquids as compared to those in gases ,the Solids and liquids are collectively called condensed phase of matter.
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solids and liquids are collectively known as condensed states of matter. because in solid and liquid atoms are packed tightly and their intermolecular forces between the atoms is more as compared to the atoms of the gasses...
that's why solids and liquids are collectively known as condensed states of matter.