ATOMIC MODEL0986576433468996565423459.pptx

GHGHFFDASDFHJHKJKHTFRFGHKJLIJYUFGFV,JJKHGTDHJHJGTHFGCGGYTFDYUUYTTUFJKJHUIH

1. SHORT REVIEW

2. What is Scientific Model and why are they important in science?

3. 2. How did scientific models help you in understanding and explaining atomic models?

4. 3. Can you give an example of how scientific models are used in different fields of science?

5. MODEL

6. Lesson Purpose Identify the different atomic models and its proponent; and 1 2 2 distinguish the characteristics of each model.

7. 2 WORD

8. SOLID MODEL SPHERE MODEL PLUM PUDDING MODEL PLANETARY MODEL NUCLEAR MODEL JOHN DALTON QUANTUM MODEL NIELS BOHR

9. CORPUSCLES THEORY J.J THOMSON ERWIN SCHRODINGER ERNEST RUTHERFORD

10. Developing and Deepening Understanding What are the different types of atomic model? 1 Who are the proponents of each model? 2 3 Can you describe each atomic model?

11. 1803 His theory stated that atoms are indivisible, those of a given element are identical, and compounds are combinations of different types of atoms. SOLID SPHERE MODEL In 1803, John Dalton, drew upon the Ancient Greek idea of atoms (the word “atom” comes from the Greek word called “ atomos ” meaning indivisible).

12. British chemist and physicist Proposed the Solid Sphere Model in the early 19th century JOHN DALTON 1766 - 1844

13. In 1904, J. J Thomson discovered electrons (which he called “corpuscles”) in atoms in 1897, for which he won a Nobel Prize. 1904 He subsequently produced the “Plum Pudding” model of the atom. It shows the atom as composed of electrons scattered throughout a spherical cloud of positive charge PLUM PUDDING MODEL

14. English physicist known for his work on the nature of electrons Proposed the Plum Pudding Model in the late 19th century. Discovered electrons as distinct particles Shifted understanding from indivisible atom to subatomic particles Paved the way for further exploration of atomic structure J.J. THOMSON 1856 - 1940

15. Most passed through with a little deflection, but some deflected at large angles. This was only possible if the atom was mostly empty space, with the positive charge concentrated in the center: the nucleus. 1911 NUCLEAR MODEL In 1911, Ernest Rutherford, fired positively charged alpha particles at a thin sheet of gold foil.

16. New Zealand-born physicist known for his contributions to nuclear physics Introduced the Nuclear Model in the early 20th century ERNEST RUTHERFORD 1871 - 1937

17. In 1913, Niels Bohr modified Rutherford’s model of the atom by stating that electrons moved around the nucleus in orbits of fixed sizes and energies. 1913 Electron energy in this model was quantized; electrons could not occupy values of energy between the fixed energy levels. PLANETARY MODEL

18. Danish physicist known for his pioneering work in atomic structure. Proposed the Planetary Model in the early 20th century NIELS BOHR 1885 - 1962

19. Electrons exist as a probable wave-like pattern around the nucleus, not in a specific orbit. It explains why electrons act like particles and waves. 1920s In 1926, Erwin Schrodinger stated that electrons do not move in set paths around the nucleus, but in waves. It is impossible to know the exact location of the electrons; instead, we have “clouds of probability” called orbitals. QUANTUM MODEL

20. Austrian physicist renowned for his contributions to quantum mechanics. Proposed the Quantum Model in the 1920s. ERWIN SCHRÖDINGER 1887 - 1961

21. Solid Sphere Atoms are dense and solid, with no internal structure or subatomic particles considered. Plum Pudding Atoms are described as uniform, positively charged spheres with electrons embedded within them, similar to raisins in a pudding. Nuclear Atom consists of a small, dense, positively charged nucleus at the center, with electrons orbiting around it, similar to planets orbiting around the sun. Planetary Electrons move in quantized, discrete energy levels around the nucleus and emit or absorb energy when transitioning between levels. Quantum Electrons do not have definite orbits, but are described by wave functions that represent probability distributions of their locations. ATOMIC MODEL TIMELINE John Dalton J.J. Thomson Ernest Rutherford Niels Bohr Erwin Schrödinger 1803 1904 1911 1913 1920s

22. The historical evolution of atomic models has been a journey of discovery, driven by experimental evidence and theoretical advancements. Each model has built upon previous ideas, refining understanding of the atom leading to new scientific breakthrough. The evolution of atomic models, continues to shape our understanding of the fundamental nature of matter and has had a profound impact on scientific discoveries in various fields. ANSWER QUESTION How does historical evolution of atomic models influence scientific discoveries?

23. Crossword Puzzle: Atomic Models in Focus     5                                   1       2   3               7                     4                                                                                                                                                                                 6                                                                     9                                           10         8                      

24. Crossword Puzzle: Atomic Models in Focus Across: 4. Atomic model where electrons don’t move around the nucleus in orbits. Electrons exist in specific energy levels as a cloud. 8. Electrons reside in orbits. They move between each shell when gaining or losing energy. 9. Negatively charged particles 10. Building block of matter that cannot be broken apart using any chemical means   Down: 1. An atom is made out of a sphere of positive charges with negatively charged electron embedded in it. 2. Subatomic particle with a neutral charge 3. A tangible model. 7. Matter is made of small indivisible atoms. 5. Most of the mass is concentrated in the center of atom. This tiny, dense, positively charged core called a nucleus. 6. Positively charged particles

25. Lesson Activity: Crossword Puzzle: Atomic Model Building Procedure: 1. Divide the class into three groups, assigning each group a specific atomic model to focus on. 2. Each group will be tasked to synthesize their own understanding of the assigned atomic model based on the worksheet they have completed and any additional research they have conducted. 3. Build the physical model of the specific model assigned to you. 4. Present it in a creative way (e.g. through a poem, dance, role play or a song)

26. QUESTION Explain how these models help you to learn about atoms?

27. Formative Assessment: Matching Type & Multiple Choice

28. Test 1: Matching Type Directions: Match the types of atomic model to its proponent. A 1. Solid Sphere Model 2. Plum Pudding Model 3. Nuclear Model 4. Quantum Model 5. Planetary Model B Ernest Rutherford J. J Thomson John Dalton Niels Bohr Erwin Schrodinger

29. Test II: Multiple Choice Directions: Choose the letter of the correct answer. 1. Which BEST describes a Solid Sphere Model? A. All objects are made of particles called atoms and that they are solid spheres that cannot be divided further into smaller particles. B. Most of the mass is concentrated in the center of atom. This tiny, dense, positively charged core called a nucleus. C. Atomic model where electrons don’t move around the nucleus in orbits. Electrons exist in specific energy levels as a cloud. D. Electrons reside in orbits. They move between each shell when gaining or losing energy.

30. 2. Which of the following statements does NOT describe a Nuclear Model? A. All objects are made of particles called atom and they are indivisible. B. The mass is concentrated in the center of an atom. C. It was discovered by Ernest Rutherford. D. none of the above

31. 3. Which statements describe a Plum Pudding Model? A. All objects are made of particles called atoms and that they are solid spheres that cannot be divided further into smaller particles. B. Most of the mass is concentrated in the center of atom. This tiny, dense, positively charged core called a nucleus. C. Atomic model where electrons don’t move around the nucleus in orbits. Electrons exist in specific energy levels as a cloud. D. Electrons reside in orbits. They move between each shell when gaining or losing energy.

32. A Planetary model is a/an_________________. A. Electrons reside in orbits. They move between each shell when gaining or losing energy. B. Atomic model where electrons don’t move around the nucleus in orbits. Electrons exist in specific energy levels as a cloud. C. Most of the mass is concentrated in the center of atom. This tiny, dense, positively charged core called a nucleus. D. All objects are made of particles called atoms and that they are solid spheres that cannot be divided further into smaller particles.

33. 5. Which of the following describes a Quantum Model? A. Electrons reside in orbits. They move between each shell when gaining or losing energy. B. Atomic model where electrons don’t move around the nucleus in orbits. Electrons exist in specific energy levels as a cloud. C. Most of the mass is concentrated in the center of atom. This tiny, dense, positively charged core called a nucleus. D. All objects are made of particles called atoms and that they are solid spheres that cannot be divided further into smaller particles.