The Structure of an Atom – Notes



❑ The Structure of an Atom – Notes

1. Who saw evidence of subatomic particles? What are they called?

2. What are protons? (fill in the chart below)

3. What are electrons? (fill in the chart below)

4. What are neutrons? (fill in the chart below)

| | | | |

|Particle |Symbol |Relative Charge |Relative Mass |

| | | | |

|Proton | | |1 |

| | | | |

|Neutron | | |1 |

| | | | |

|Electron | | |1 |

| | | |1836 |

5. What is atomic number?

6. How can you tell how many electrons a neutral element has?

7. If sulfur has an atomic number of 16, how many protons does it have?

8. If iron has 26 protons, how many electrons does it have?

9. If silver has 47 protons, what is it’s atomic number?

10.

10. What is mass number?

11. Aluminum has mass # of 27 and atomic # of 13. How many neutrons are in the nucleus?

12. Label the element Carbon in the box below:

13. What are isotopes?

14. Problem: Uranium-238 has a mass number of 238 with 146 neutrons in the nucleus. An isotope, Uranium-235 has 143 neutrons in the nucleus. What is the atomic number of Uranium?

Lesson Plan

Teacher: Jeffrey F. Bishop Grade: 8 Date:

Day: Title: The Structure of an Atom Time: 43 mins

NJCCC Standards: 5.6 UbD Facets: Explanation

Student Learning Objective: Cognitive Level of Lesson: Application

(Refer to Bloom’s Taxonomy)

Students will be able to:

Learning: Recognize patterns in the atomic numbers and mass numbers of elements

Behavior: by individually completing a notes packet

Condition: while viewing a PowerPoint presentation.

Essential question: What is atomic number and atomic mass?

Activities: 1) Teacher will distribute the lesson packet. (directions)

2) Access Prior Knowledge: Graphic organizer.

3) Students will view the PowerPoint. (related)

4) Students will complete the notes. (relevant)

5) Closure: complete the last box of the graphic organizer.

6) Homework: complete 4.2. Due tomorrow.

Assessment: Formative: completing the notes.

Summative: 4.2.

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