Match the discovery/ideas/experiment to the contributor Found evidence that the atom is mostly empty space Rutherford Discovered the electron Thompson Used the cathode ray experiment to further the theory of the atom Dalton Democritus Was a philosopher Was the first to have the idea that matter was not infinitely divisible Discovered the nucleus Used the gold foil experiment to further the theory of the atom Was the first to use science to back up the idea of the atom > >

Match the discovery/ideas/experiment to the contributor Found evidence that the atom is mostly empty space Rutherford Discovered the electron Thompson Used the cathode ray experiment to further the theory of the atom Dalton Democritus Was a philosopher Was the first to have the idea that matter was not infinitely divisible Discovered the nucleus Used the gold foil experiment to further the theory of the atom Was the first to use science to back up the idea of the atom > >

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Please check and see if I got the information in the table below correct. If there are mistakes please correct them. Protons Neutrons Electrons Element Symbol Element Name Net Charge Mass Number Valence Electrons 1 0 1 H Hydrogen 0 1 1 6 6 6 C Carbon 0 12 4 8 8 8 O Oxygen 0 16 6 3 4 2 Li Lithium +1 7 0 5 6 4 B Boron +1 11 3 4 4 2 Be Beryllium +2 8 2 9 10 10 F Fluorine -1 19 8 2 2 2 He Helium 0 4 2 5 4 7 B Boron -2 9 5 6 6 6 C Carbon 0 12 4
Using the golf ball analogy, where the golf ball represents the nucleus of a hydrogen atom, what would be the ratio of the diameter of the nucleus to that of the complete atom? 1. 2. What was the key piece of evidence used by Rutherford to claim that an aton was mostly empty space? Which wavelength is the most energetic? Which is the least energetic? 3. 4. What do you notice about the colour of the light produced from the hydrogen tube? 5. If the tube produced all frequencies of visible light, what colour would the light be? 6. The scale is in nanometers (nm). How many nanometers in a meter? 7. Record (in chart form) the wavelength of each of the coloured lines in the hydrogen emission spectrum 8. Which gas most closely matches the emission spectrum? Explain how you came to this conclusion. 9. What is the relationship between the number of levels and the number of lines? If an atom had 7 energy levels (n =1 to n = 7) how many spectral lines would we expect to be able to see? How many…
Which statement about the atom's nucleus is correct? O The nucleus is made of protons and neutrons and has a negative charge. The nucleus is made of protons and neutrons and has a positive charge. O The nucleus is made of electrons and has a positive charge. O The nucleus is made of electrons and has a negative charge.
See if you can complete the following table using only what is on this page. ( Fill in th blanks ) element symbol nuclear symbol atomic number mass number protons neutorns electrons Cu2963 N 13 7 29 36
ymbor 3. Are the following statements regarding Dalton's atomic theory true or false? a. (True/False) All nitrogen atoms are identical. b. (True/False) Sodium and chlorine atoms combine in a 1:1 ratio to form sodium chloride (salt) Are the following statements regarding electrons true or false? a. (True/False) Electrons have a charge of 1+. b. (True/False) Electrons are found in the nucleus of the atom. 4. 5. Are the following statement regarding protons true or false? a. (TruelFalse) Protons have the same mass as electrons. b.True/False) Protons are positively charged. C. (True/False) Protons are found in the nucleus of the atom. What is the name and number of protons for each of the following atoms? Name 6. Number of Protons а. К b. Li С. Mn
Which is true of gamma (γ ) ray? Group of answer choices They have a positive charge They have no mass They have a negative charge They have the same mass as a proton
What does the following element description actually mean? N+1 1. a sodium atom with 11 protons, 10 electrons, and 11 neutrons 2.a nitrogen atom with 6 protons, 14 electrons, and 7 neutrons 3.a sodium atom with 12 protons, 11 electrons, and 11 neutrons 4.a nitrogen atom with 7 protons, 6 electrons, and 7 neutrons 5.none of the above
Which statement below best explains why Ernest Rutherford was expecting the alpha particles to pass through the gold foil undeflected? Rutherford expected the particles to bounce off of the electrons in the foil O Rutherford expected the gold atoms to not be densely packed together Rutherford didn't know there was a nucleus in the gold atom that the particles could bounce off of gold is very malleable