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Biology Chapter #2
Quizz
| Question | Answer |
|---|---|
| What is the smallest functional unity of an element? | atom |
| List the four main elements in the human body | carbon, hydrogen, oxygen, nitrogen |
| The atomic number of an atom is equal to its number of | protons |
| In a double bond, how many pairs of electrons are shared? | two |
| The atomic mass of an atom is equal to its ___________ and ______________. | protons, neutrons neutrons, protons |