A. 3
From 0 to 6, a solution is acidic. 7 is neutral and from 8 to 14.. is basic
They are examples of physical<span> contaminants .</span>
Answer:
atom is the smallest unit of matter that has the characteristic properties of a chemical element.
Answer:
<u>The Answer is (B) A car get rusty over the course of few years</u>Explanation:
<u>Explanation:</u>
- <u>Oxidation </u>refers to the process of loss of electrons by a molecule,atom or ion during a chemical reaction.The process which is just the opposite of oxidation is reduction,it occurs when their is gain of electrons .
- <u>When iron reacts with the oxygen it forms a chemical know as Rust.In this case iron has lost some electrons and the oxygen has gained some electrons</u>
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