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1. Explain the differences between Dalton's Atomic Theory and the Modern Atomic Theory.

2. Discuss the Law of Conservation of Mass.

3. J.J. Thompson used the cathode ray tube experiments to prove:

4. Rutherford devised the gold foil experiment and proved:

5. Robert Millikan determined that:

6. Describe the characteristics of protons, neutrons, and electrons, and how many there are in an element or isotope.

7. Discuss the properties of light.

8. What is the molar mass of [tex]C_2H_4[/tex]?

9. What is the molar mass of [tex]Pb_3(PO_4)_2[/tex]?

10. If I have 7.000 moles of sulfur, how many grams of sulfur do I have?

11. How many moles of Zn are in 5.0 grams of Zn?

12. How many atoms of P are in 7.50 grams of phosphorus?

13. 6.0000 moles of carbon has ________ atoms.

14. What caused the colors during the flame test experiment?

15. What happens when an excited lithium electron falls back to its ground state?

16. Describe the Bohr atom and what it was based on.

17. Describe Heisenberg's uncertainty principle.

18. Describe each quantum number, what it describes or indicates about an electron, and give an example.

19. What is the outermost occupied orbital for the element neon?

20. What is the maximum number of electrons that will fit in the s, p, d, and f-orbitals?

21. Write out the orbital notation for nitrogen.

22. Write out the electron configuration of phosphorus.

23. Write out the Noble-gas notation for platinum.

24. What are the most stable non-metal elements?

25. What is another name for the d-block elements?

26. Understand and know the trends when varying the wavelength, voltage, and intensity during the photoelectric pHet lab.

27. What is the purpose of a flame test?

Answer :

Final answer:

The differences between Dalton's Atomic Theory and the Modern Atomic Theory, the Law of Conservation of Mass, and J.J. Thompson's cathode ray tube experiments.


Explanation:

1. Dalton's Atomic Theory is an early model of the atom that states that atoms are indivisible and that all atoms of a given element are identical. It also states that chemical reactions involve the rearrangement of atoms. Modern Atomic Theory, on the other hand, incorporates the idea that atoms are made up of subatomic particles (protons, neutrons, and electrons) and that atoms can be divided into smaller parts in nuclear reactions.

2. The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction. This means that the total mass of the reactants is equal to the total mass of the products. For example, if you burn a piece of paper, the mass of the ash and the gases produced will be equal to the mass of the original paper.

3. J.J. Thompson used cathode ray tube experiments to prove the existence of negatively charged particles called electrons. He observed that a beam of particles was deflected by electric and magnetic fields, indicating the presence of these charged particles.


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