Mass and energy are conserved Question 11 options: A) only in chemical changes. B) always in physical changes and sometimes in chemical changes. C) only in physical changes. D) in chemical changes and physical changes.

Noble gases is far right

The correct answer should be "electrons orbit the nucleus in circular motions exactly as shown on the classic bohr model."

Answerit is not a suspension or colloid mixture, it is a solution mixture;

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