Paper chromatography can be applied to "ink" to determine if it is a pure substance or a "mixture" of pure substances (in which two or more pure substances are combined). Since, tested with paper chromatography, "ink" separates into its constituent pure substances, Ink is a mixture.
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Annswer is B Explanation:acording to this diagram i f
gffgdffdggfdfgd
Answer:
No of neutrons and protons decides mass of the atom. Electrons having negligible
mass are ignored.
Mass of atom
Mass of atom= sum of no of protons(Z) and neutons(N)
=Z+N
For eg:
In hydrogen atom,
Mass of H= Z+N
=1+0
=1 AMU
C, because liquids as gas can move on there own at different points but solids are locked in place and do not move past one another like liquids and gases do.
The most likely evidence of an energy transformation taking place when a <em>wire</em> is twisted and turned breaks is that the broken ends of the wire turn warm (even very hot if it was twisted and turned vigoroulsy).
The heat (thermal energy) evolves due to the internal friction developed by the relative motion of the internal particles of the wire, being kinetic energy transformed into heat energy.
It is the same phenomenon that is observed when a saw cuts a piece of metal and the reason why a cooling fluid is poured over the pieces of metal to avoid that the temperature raises too much.
