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NOTES: Isotopes and Ions Warm-up (write in packet – p.6):

NOTES: Isotopes and Ions Warm-up (write in packet – p.6):. Isotopes:. Isotopes - is a version of an atom with the same number of PROTONS , but different number of NEUTRONS . -If an atom is an isotope you name it using the element name followed by the mass number .

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NOTES: Isotopes and Ions Warm-up (write in packet – p.6):

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  1. NOTES: Isotopes and Ions Warm-up (write in packet – p.6):

  2. Isotopes: • Isotopes - is a version of an atom with the same number of PROTONS, but different number of NEUTRONS. -If an atom is an isotope you name it using the element name followed by the mass number. * Ex: carbon – 12 and carbon -14 - Writing Isotope Symbols: • Write the atomic symbol for the element • To the top left of the symbol write the mass # of the isotope. • Beneath that (to the bottom left of the symbol). Write the atomic number of the element.

  3. Ex: Label the following Carbon-14 is written like this: C Mass # 14 Element Symbol 6 Atomic #

  4. Isotope Examples: C and C 14 12 6 6 How many protons does Carbon-14 contain? 6 How many neutrons does Carbon-14 contain? 14-6 = 8 How many protons does Carbon-12 contain? 6 How many neutrons does Carbon-12 contain? 12-6= 6

  5. * Atoms as a rule are all neutral incharge, meaning that the number of protons and electrons in the atoms are equal. Ions: • Ions are charged atoms (+ or -) • Formed when an atom GAINS or LOSES electrons

  6. Ions • Cations • Positively (+) charged atoms • Form by LOSING electrons • Usually formed by metals Examples Lithium - 7 + Protons: 3 Neutrons: 4 Charge: 1+ Electrons: 2

  7. Ions • Anions • Negatively (-) charged atoms • Form by GAINING electrons • Usually formed by nonmetals • Examples Sulfur - 32 2- Protons: 16 Neutrons: 16 Charge: 2- Electrons: 18

  8. Page 8-9 • Complete the table as directed on Pg. 8. • Complete the chart and answer the questions on Pg. 8 in group of 2 (no larger!). • Homework: Pg. 9

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