Match the following. match the items in the left column to the items in the right column. 1. the starting materials completely lose their properties to form new substances law of constant composition 2. a change from one state of matter to another molecule 3. a change in shape, size, or physical characteristics but remaining same substance physical change 4. a pure compound consists of exactly the same elements in the exact same ratios by mass chemical change 5. the smallest unit of a compound phase change

h let me think

the answer is definitely c.

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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