Students explore the attractions and motion of atoms and molecules as they experiment with and observe the heating and cooling of a solid, liquid, and gas. Gas, liquid, and solid are known as the three states of matter or material, but each of solid and liquid states may exist in one or more forms. Further, the value of em was found to be independent of the nature of the materialmetal used as the cathode. Just like all english words are made up of 26 alphabets, all matter in the universe is made up of only a few basic units called elements.
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