The law of conservation of matter states that matter cannot be created or destroyed. this law applies when a chemical change occurs. the number of atoms present before a chemical change is the same as the number of atoms present after the change. the atoms may be combined in a new way, but the overall number of atoms remains unchanged. using the law of conservation of matter, if i started an experiment with 200 atoms of matter, how many atoms would i have after the chemical change? question 1 options: 100 200 300 400

pie chart because it is in percents ( % )

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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