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Understanding Periodic Elements and Isotopes: A Comprehensive Overview

This lesson covers critical concepts in chemistry, focusing on elements in the periodic table, particularly identifying elements based on their period and group, as well as their proton numbers. It introduces isotopes, explaining how they differ in neutron count and mass numbers. Students will engage with examples such as Carbon-12 and Carbon-14 to find their protons, neutrons, and electrons, and practice drawing isotopes. A worksheet will be provided for in-class and homework assignments to reinforce learning.

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Understanding Periodic Elements and Isotopes: A Comprehensive Overview

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  1. Bell Ringer • What element is located at period 4 group 8? • What element has 45 protons? • What period and group is Iron located in?

  2. Isotopes Integrated Science

  3. Isotopes Atoms of the same element with different numbers of neutrons. If they have different numbers of neutrons then they have different mass numbers.

  4. Examples Find the number of protons, neutrons, and electrons for each.

  5. How to name isotopes!! Carbon-12 12 is the mass number How many protons, neutrons, and electrons does Carbon-12 have? Carbon-14 14 is the mass number How many protons, neutrons, and electrons does Carbon-14 have?

  6. More examples Chromium-58 1. Mass number is ________ 2. Find the number of protons, neutrons, and electrons for Chromium-58? 3. Draw this isotope. Protons (+), Neutrons (o), Electrons (-) Chromium-63 1. Mass number is ________ 2. Find the number of protons, neutrons, and electrons for Chromium-63? 3. Draw this isotope. Protons (+), Neutrons (o), Electrons (-)

  7. Practice On your marker board, finish this table and draw the isotope.

  8. Practice On your marker board, finish this table and draw the isotope.

  9. Worksheet You have the rest of the class to work on this worksheet. If you do not finish in class it is homework.

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