is the transfer of heat energy through the movement of particles in a gas or liquid. The warmer parts move up and the cooler parts move down.

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

it means there are 3 atoms of oxygen

your answer is c) plasma

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