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Biology Exam 1 MGCCC Study Guide Solutions

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Biology Exam 1 MGCCC Study Guide Solutions Atomic Number - ANSWER-The Number of Protons in the Nucleus. Cation - ANSWER-Atom with a positive charge (more protons than electrons) Anion - ANSWER-Atom with a negative charge (more electrons than protons) he number of Protons CAN or CAN NOT be cha...

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  • November 12, 2024
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  • 2024/2025
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EmilyCharlene
Biology Exam 1 MGCCC Study Guide
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Atomic Number - ANSWER✔✔-The Number of Protons in the


Nucleus.


Cation - ANSWER✔✔-Atom with a positive charge (more protons than electrons)


Anion - ANSWER✔✔-Atom with a negative charge (more electrons than protons)


he number of Protons CAN or CAN NOT be changed? - ANSWER✔✔-Can NOT

(except in stars)


electrons - ANSWER✔✔-are added as dots, starting on the


right, and move clockwise.


isotopes - ANSWER✔✔-Change in the number of Neutrons


ions - ANSWER✔✔-Change in the number of Electrons


isotopes (contd.) - ANSWER✔✔-Neutrons stabilize an atom and keep the protons and

electrons from


pulling each other apart.


Copyright ©EMILYCHARLENE2025. ALL RIGHTS RESERVED
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, When the number of neutrons is changed, the atom destabilizes and


becomes radioactive.


Uses for Isotopes - ANSWER✔✔-Medicine (PET scans, FDA approved isotopes, C14

traces how carbon moves through plants, Radiometic dating..)


half life - ANSWER✔✔-Time it takes for an atom to lose 50% of its energy


covalent bond - ANSWER✔✔-electrons are shared


ionic bond - ANSWER✔✔-electrons are taken


hydrogen bond - ANSWER✔✔-weak attraction between slightly charged atoms


and a hydrogen atom


covalent bond example - ANSWER✔✔-oxygen


ionic bond example - ANSWER✔✔-salt


hydrogen bond example - ANSWER✔✔-water


H2O - ANSWER✔✔-H and 0 share electrons, but not evenly. We call this a


Polar Covalent Bond!


hydrogen bond (contd.) - ANSWER✔✔-weak attraction between a slightly + H, and a


slightly -atom on some other molecule.
Copyright ©EMILYCHARLENE2025. ALL RIGHTS RESERVED
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