Question

what is colloid .? what is mixture ?
what is atom ? Atomic mass of Hydrogen?

Answer 1

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Colloid ..A colloid is a heterogeneous mixture..
Mixture .. Combination of two substance..
Atoms .. Atoms are the smallest part of matter.. which either be created nor be distroyed..
Atomic number of Hydrogen =1

Answer 2

a colloid is a heterogeneous mixture the size of particles in a colloid is in between 1 to 1000 m.
when two or more elements or compounds are mixed together in any proportion are known as the mixture.
an atom is the smallest particle of an element which can take part in a chemical reaction.
atomic mass of hydrogen is 1.007942amu.